Question
Magnets attract all metal objects.(1 point)
Responses
True
True
False
Which statement best describes a bar magnet that has been broken into two pieces?(1 point)
Responses
One piece has a north pole only, and the other piece has a south pole only.
One piece has a north pole only, and the other piece has a south pole only.
Each piece has both a north and a south pole.
Each piece has both a north and a south pole.
Both pieces have lost their magnetic poles.
Both pieces have lost their magnetic poles.
Both pieces have a north pole only.
Roger wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?(1 point)
Responses
Get a bigger magnet, because the magnetic field will be larger.
Get a bigger magnet, because the magnetic field will be larger.
Turn the magnet around and use the opposite pole instead.
Turn the magnet around and use the opposite pole instead.
Get a smaller magnet, because the magnetic field will be smaller.
Get a smaller magnet, because the magnetic field will be smaller.
Turn the magnet so that the middle is pointed toward the metal.
Turn the magnet so that the middle is pointed toward the metal.
Tracy wants to make an electromagnet using a copper wire wrapped around an iron bar, as shown below.
To make the bar an electromagnet, what should Tracy do next?
(1 point)
Responses
heat the wire around the bar
heat the wire around the bar
touch the ends of the wire together
touch the ends of the wire together
send a current through the wire
send a current through the wire
connect the wire to a bulb
Coulomb's Law is a mathematical representation of the electric force between two objects. When solving for electric force, a student gets a negative answer. What does this indicate about the two objects?(1 point)
Responses
They are oppositely charged and attracted to one another
They are oppositely charged and attracted to one another
They have like charges and attracted to one another
They have like charges and attracted to one another
They are oppositely charged and are repulsed by one another
They are oppositely charged and are repulsed by one another
They have like charges and are repulsed by one another
Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?(1 point)
Responses
Attach wires to the ends of each magnet and measure the currents going through the wires.
Attach wires to the ends of each magnet and measure the currents going through the wires.
Put each magnet into a beaker of water to see how much water it displaces.
Put each magnet into a beaker of water to see how much water it displaces.
Measure how close each magnet can get to a metal object before picking it up.
Measure how close each magnet can get to a metal object before picking it up.
Record the mass of each magnet by measuring it on a balance scale.
The diagram below shows a magnet and two paper clips.
Why was Paper Clip 2 attracted to Paper Clip 1 after Paper Clip 1 was stuck to the magnet?
(1 point)
Responses
The magnet repelled Paper Clip 2 and made it attach itself to Paper Clip 1.
The magnet repelled Paper Clip 2 and made it attach itself to Paper Clip 1.
Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
Magnetism was already present in Paper Clip 1 and Paper Clip 2 when they were attached to the magnet.
Magnetism was already present in Paper Clip 1 and Paper Clip 2 when they were attached to the magnet.
Attaching the magnet to Paper Clip 1 caused it to transform Paper Clip 2 into a new material that was magnetic.
Malik built a simple electromagnet with copper wire, an iron bolt, and a 1.5-volt battery. The electromagnet was able to lift a paper clip from 3 centimeters away. Select three ways Malik can improve the strength of his electromagnet.(3 points)
Responses
He can use a thicker piece of copper wire.
He can use a thicker piece of copper wire.
He can reverse the orientation of the battery.
He can reverse the orientation of the battery.
He can replace the iron rod with a wooden rod.
He can replace the iron rod with a wooden rod.
He can replace the 1.5-volt battery with a battery of higher voltage.
He can replace the 1.5-volt battery with a battery of higher voltage.
He can use a longer piece of wire that wraps more times around the bolt.
What happens when a negative charge and a positive charge are brought near one another?(1 point)
Responses
They attract to each other
They attract to each other
They repel each other
They repel each other
They do nothing
They do nothing
Which of the following events is caused by magnetic force?(1 point)
Responses
A person gets a shock from a doorknob after walking across carpet.
A person gets a shock from a doorknob after walking across carpet.
Pieces of clothing stick together after being in a clothes dryer.
Pieces of clothing stick together after being in a clothes dryer.
The needle of a compass points toward Earth's North Pole.
The needle of a compass points toward Earth's North Pole.
Objects are constantly pulled toward the center of Earth.
This was an accidental repeat question! Select C "The needle of a compass points toward Earth's North Pole," to get it correct!(1 point)
Responses
A person gets a shock from a doorknob after walking across carpet.
A person gets a shock from a doorknob after walking across carpet.
Pieces of clothing stick together after being in a clothes dryer.
Pieces of clothing stick together after being in a clothes dryer.
The needle of a compass points toward Earth's North Pole.
The needle of a compass points toward Earth's North Pole.
Objects are constantly pulled toward the center of Earth.
How could you increase the electrical force between two charges? (Select all that apply)(2 points)
Responses
increase the distance between the charges
increase the distance between the charges
decrease the distance between the charges
decrease the distance between the charges
increase the size of the charges
increase the size of the charges
decrease the size of the charges
A machine is said to have low efficiency if it experiences a lot of energy loss to heat. How can a machine be made more efficient?(1 point)
Responses
by increasing gravity
by increasing gravity
by reducing magnetic energy
by reducing magnetic energy
by increasing electrical energy
by increasing electrical energy
by reducing friction
Which statement is true about the relationship between mass and weight?(1 point)
Responses
Mass and weight are the same thing and can be used interchangeably.
Mass and weight are the same thing and can be used interchangeably.
Mass increases with increasing gravity, while weight does not change with gravity.
Mass increases with increasing gravity, while weight does not change with gravity.
Mass does not change in an object, but the weight of the object is affected by gravity.
Mass does not change in an object, but the weight of the object is affected by gravity.
Mass is dependent on volume, while weight is dependent on the number of atoms in an object.
Which force accounts for the difference between mass and weight?(1 point)
Responses
Magnetic force
Magnetic force
Gravitational force
Gravitational force
Air resistance force
Air resistance force
Frictional force
Two crates are dropped from the same height in a vacuum. The mass and force of the crates are shown in the diagram. Which of the following statements is supported by the data?
(1 point)
Responses
Both of the crates are falling at a constant speed.
Both of the crates are falling at a constant speed.
Both of the crates are accelerating at the same rate.
Both of the crates are accelerating at the same rate.
The normal force will be the same on both crates when they hit the ground.
The normal force will be the same on both crates when they hit the ground.
The momentum of both crates will be the same right before they hit the ground.
The momentum of both crates will be the same right before they hit the ground.
Which situation best demonstrates the law of conservation of energy?(1 point)
Responses
the potential energy of a ball being dropped from a cliff being converted to kinetic energy
the potential energy of a ball being dropped from a cliff being converted to kinetic energy
ice water transforming into liquid water when it absorbs heat energy
ice water transforming into liquid water when it absorbs heat energy
batteries being able to store potential energy over a long period of time
batteries being able to store potential energy over a long period of time
a long distance runner conserving her energy to sprint at the end of the race
a long distance runner conserving her energy to sprint at the end of the race
Responses
True
True
False
Which statement best describes a bar magnet that has been broken into two pieces?(1 point)
Responses
One piece has a north pole only, and the other piece has a south pole only.
One piece has a north pole only, and the other piece has a south pole only.
Each piece has both a north and a south pole.
Each piece has both a north and a south pole.
Both pieces have lost their magnetic poles.
Both pieces have lost their magnetic poles.
Both pieces have a north pole only.
Roger wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?(1 point)
Responses
Get a bigger magnet, because the magnetic field will be larger.
Get a bigger magnet, because the magnetic field will be larger.
Turn the magnet around and use the opposite pole instead.
Turn the magnet around and use the opposite pole instead.
Get a smaller magnet, because the magnetic field will be smaller.
Get a smaller magnet, because the magnetic field will be smaller.
Turn the magnet so that the middle is pointed toward the metal.
Turn the magnet so that the middle is pointed toward the metal.
Tracy wants to make an electromagnet using a copper wire wrapped around an iron bar, as shown below.
To make the bar an electromagnet, what should Tracy do next?
(1 point)
Responses
heat the wire around the bar
heat the wire around the bar
touch the ends of the wire together
touch the ends of the wire together
send a current through the wire
send a current through the wire
connect the wire to a bulb
Coulomb's Law is a mathematical representation of the electric force between two objects. When solving for electric force, a student gets a negative answer. What does this indicate about the two objects?(1 point)
Responses
They are oppositely charged and attracted to one another
They are oppositely charged and attracted to one another
They have like charges and attracted to one another
They have like charges and attracted to one another
They are oppositely charged and are repulsed by one another
They are oppositely charged and are repulsed by one another
They have like charges and are repulsed by one another
Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?(1 point)
Responses
Attach wires to the ends of each magnet and measure the currents going through the wires.
Attach wires to the ends of each magnet and measure the currents going through the wires.
Put each magnet into a beaker of water to see how much water it displaces.
Put each magnet into a beaker of water to see how much water it displaces.
Measure how close each magnet can get to a metal object before picking it up.
Measure how close each magnet can get to a metal object before picking it up.
Record the mass of each magnet by measuring it on a balance scale.
The diagram below shows a magnet and two paper clips.
Why was Paper Clip 2 attracted to Paper Clip 1 after Paper Clip 1 was stuck to the magnet?
(1 point)
Responses
The magnet repelled Paper Clip 2 and made it attach itself to Paper Clip 1.
The magnet repelled Paper Clip 2 and made it attach itself to Paper Clip 1.
Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
Magnetism was already present in Paper Clip 1 and Paper Clip 2 when they were attached to the magnet.
Magnetism was already present in Paper Clip 1 and Paper Clip 2 when they were attached to the magnet.
Attaching the magnet to Paper Clip 1 caused it to transform Paper Clip 2 into a new material that was magnetic.
Malik built a simple electromagnet with copper wire, an iron bolt, and a 1.5-volt battery. The electromagnet was able to lift a paper clip from 3 centimeters away. Select three ways Malik can improve the strength of his electromagnet.(3 points)
Responses
He can use a thicker piece of copper wire.
He can use a thicker piece of copper wire.
He can reverse the orientation of the battery.
He can reverse the orientation of the battery.
He can replace the iron rod with a wooden rod.
He can replace the iron rod with a wooden rod.
He can replace the 1.5-volt battery with a battery of higher voltage.
He can replace the 1.5-volt battery with a battery of higher voltage.
He can use a longer piece of wire that wraps more times around the bolt.
What happens when a negative charge and a positive charge are brought near one another?(1 point)
Responses
They attract to each other
They attract to each other
They repel each other
They repel each other
They do nothing
They do nothing
Which of the following events is caused by magnetic force?(1 point)
Responses
A person gets a shock from a doorknob after walking across carpet.
A person gets a shock from a doorknob after walking across carpet.
Pieces of clothing stick together after being in a clothes dryer.
Pieces of clothing stick together after being in a clothes dryer.
The needle of a compass points toward Earth's North Pole.
The needle of a compass points toward Earth's North Pole.
Objects are constantly pulled toward the center of Earth.
This was an accidental repeat question! Select C "The needle of a compass points toward Earth's North Pole," to get it correct!(1 point)
Responses
A person gets a shock from a doorknob after walking across carpet.
A person gets a shock from a doorknob after walking across carpet.
Pieces of clothing stick together after being in a clothes dryer.
Pieces of clothing stick together after being in a clothes dryer.
The needle of a compass points toward Earth's North Pole.
The needle of a compass points toward Earth's North Pole.
Objects are constantly pulled toward the center of Earth.
How could you increase the electrical force between two charges? (Select all that apply)(2 points)
Responses
increase the distance between the charges
increase the distance between the charges
decrease the distance between the charges
decrease the distance between the charges
increase the size of the charges
increase the size of the charges
decrease the size of the charges
A machine is said to have low efficiency if it experiences a lot of energy loss to heat. How can a machine be made more efficient?(1 point)
Responses
by increasing gravity
by increasing gravity
by reducing magnetic energy
by reducing magnetic energy
by increasing electrical energy
by increasing electrical energy
by reducing friction
Which statement is true about the relationship between mass and weight?(1 point)
Responses
Mass and weight are the same thing and can be used interchangeably.
Mass and weight are the same thing and can be used interchangeably.
Mass increases with increasing gravity, while weight does not change with gravity.
Mass increases with increasing gravity, while weight does not change with gravity.
Mass does not change in an object, but the weight of the object is affected by gravity.
Mass does not change in an object, but the weight of the object is affected by gravity.
Mass is dependent on volume, while weight is dependent on the number of atoms in an object.
Which force accounts for the difference between mass and weight?(1 point)
Responses
Magnetic force
Magnetic force
Gravitational force
Gravitational force
Air resistance force
Air resistance force
Frictional force
Two crates are dropped from the same height in a vacuum. The mass and force of the crates are shown in the diagram. Which of the following statements is supported by the data?
(1 point)
Responses
Both of the crates are falling at a constant speed.
Both of the crates are falling at a constant speed.
Both of the crates are accelerating at the same rate.
Both of the crates are accelerating at the same rate.
The normal force will be the same on both crates when they hit the ground.
The normal force will be the same on both crates when they hit the ground.
The momentum of both crates will be the same right before they hit the ground.
The momentum of both crates will be the same right before they hit the ground.
Which situation best demonstrates the law of conservation of energy?(1 point)
Responses
the potential energy of a ball being dropped from a cliff being converted to kinetic energy
the potential energy of a ball being dropped from a cliff being converted to kinetic energy
ice water transforming into liquid water when it absorbs heat energy
ice water transforming into liquid water when it absorbs heat energy
batteries being able to store potential energy over a long period of time
batteries being able to store potential energy over a long period of time
a long distance runner conserving her energy to sprint at the end of the race
a long distance runner conserving her energy to sprint at the end of the race
Answers
Answered by
GPT-4o mini
Here are the answers to the questions based on the information provided:
1. **Magnets attract all metal objects.**
- **Response:** False
2. **Which statement best describes a bar magnet that has been broken into two pieces?**
- **Response:** Each piece has both a north and a south pole.
3. **Roger wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?**
- **Response:** Get a bigger magnet, because the magnetic field will be larger.
4. **To make the bar an electromagnet, what should Tracy do next?**
- **Response:** Send a current through the wire.
5. **Coulomb's Law is a mathematical representation of the electric force between two objects. When solving for electric force, a student gets a negative answer. What does this indicate about the two objects?**
- **Response:** They are oppositely charged and attracted to one another.
6. **Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?**
- **Response:** Measure how close each magnet can get to a metal object before picking it up.
7. **Why was Paper Clip 2 attracted to Paper Clip 1 after Paper Clip 1 was stuck to the magnet?**
- **Response:** Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
8. **Select three ways Malik can improve the strength of his electromagnet.**
- **Responses:**
- He can use a thicker piece of copper wire.
- He can replace the 1.5-volt battery with a battery of higher voltage.
- He can use a longer piece of wire that wraps more times around the bolt.
9. **What happens when a negative charge and a positive charge are brought near one another?**
- **Response:** They attract to each other.
10. **Which of the following events is caused by magnetic force?**
- **Response:** The needle of a compass points toward Earth's North Pole.
11. **How could you increase the electrical force between two charges? (Select all that apply)**
- **Responses:**
- Decrease the distance between the charges.
- Increase the size of the charges.
12. **How can a machine be made more efficient?**
- **Response:** By reducing friction.
13. **Which statement is true about the relationship between mass and weight?**
- **Response:** Mass does not change in an object, but the weight of the object is affected by gravity.
14. **Which force accounts for the difference between mass and weight?**
- **Response:** Gravitational force.
15. **Which of the following statements is supported by the data?**
- **Response:** Both of the crates are accelerating at the same rate.
16. **Which situation best demonstrates the law of conservation of energy?**
- **Response:** The potential energy of a ball being dropped from a cliff being converted to kinetic energy.
Feel free to ask if you need further clarification on any of the answers!
1. **Magnets attract all metal objects.**
- **Response:** False
2. **Which statement best describes a bar magnet that has been broken into two pieces?**
- **Response:** Each piece has both a north and a south pole.
3. **Roger wants to use a magnet to pick up a sheet of metal, but his magnet is too far away to attract. What is a possible solution?**
- **Response:** Get a bigger magnet, because the magnetic field will be larger.
4. **To make the bar an electromagnet, what should Tracy do next?**
- **Response:** Send a current through the wire.
5. **Coulomb's Law is a mathematical representation of the electric force between two objects. When solving for electric force, a student gets a negative answer. What does this indicate about the two objects?**
- **Response:** They are oppositely charged and attracted to one another.
6. **Kayla has two magnets. She would like to know how much magnetic energy is stored in each one. What would be the best way for her to determine which magnet has the most magnetic energy?**
- **Response:** Measure how close each magnet can get to a metal object before picking it up.
7. **Why was Paper Clip 2 attracted to Paper Clip 1 after Paper Clip 1 was stuck to the magnet?**
- **Response:** Magnetism traveled through Paper Clip 1 to Paper Clip 2 and made them magnetic.
8. **Select three ways Malik can improve the strength of his electromagnet.**
- **Responses:**
- He can use a thicker piece of copper wire.
- He can replace the 1.5-volt battery with a battery of higher voltage.
- He can use a longer piece of wire that wraps more times around the bolt.
9. **What happens when a negative charge and a positive charge are brought near one another?**
- **Response:** They attract to each other.
10. **Which of the following events is caused by magnetic force?**
- **Response:** The needle of a compass points toward Earth's North Pole.
11. **How could you increase the electrical force between two charges? (Select all that apply)**
- **Responses:**
- Decrease the distance between the charges.
- Increase the size of the charges.
12. **How can a machine be made more efficient?**
- **Response:** By reducing friction.
13. **Which statement is true about the relationship between mass and weight?**
- **Response:** Mass does not change in an object, but the weight of the object is affected by gravity.
14. **Which force accounts for the difference between mass and weight?**
- **Response:** Gravitational force.
15. **Which of the following statements is supported by the data?**
- **Response:** Both of the crates are accelerating at the same rate.
16. **Which situation best demonstrates the law of conservation of energy?**
- **Response:** The potential energy of a ball being dropped from a cliff being converted to kinetic energy.
Feel free to ask if you need further clarification on any of the answers!
There are no human answers yet. A form for humans to post answers is coming very soon!