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Questions (1,189)

Which force accounts for the difference between mass and weight?a Gravitational force b Frictional force c Magnetic force d Air
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2. 261 views
Which situation best demonstrates the law of conservation of energy?a the potential energy of a ball being dropped from a cliff
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2. 266 views
The drawing below is of three separate bar magnets. The north and south poles of each magnet are labeled.Which arrangement shows
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2. 261 views
What happens to the magnetic force between two objects if they are moved farther apart?a The force increases. b The force
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2. 165 views
A force acting on an object does NO work if:a the force is greater than the force of friction b a machine is used to move the
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2. 228 views
Which of the following is an example of thermal energy being transferred directly from one substance to another via conduction?a
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Review the images above.image of a dodge car racing image of a gas pump Use the images above to give a real-world energy
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Review the images above.Use the images above to give a real-world energy transformation. **Be sure to give the types of energy
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2. 254 views
Jeriah places two metal cubes in contact with each other. Energy and heat flow from Cube A to Cube B. What conclusion can be
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A solid object at 30°C is placed inside a container of liquid at 60°C.What most likely will be observed? a The temperature of
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An energy transfer is shown below.What type of energy transfer is shown in this image? a chemical to electrical b electrical to
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Whenever you directly touch a hot plate, you immediately feel the heat transfer to your hand the second you touch it. This is an
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Which of the following is the best example of mechanical energy?a sun b lightbulb c riding a bicylce d megaphone
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Which of the following is the best example of mechanical energy?a b c d
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Which characteristic remains the same regardless of a change in gravity?a mass b weight c speed d momentum
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The particles have little to no attachment to each other and instead bounce around in a container freely
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The particles are locked together in a rigid structure and cannot move much
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The particles are still held together, but not rigidly, so they slide all over one another and prevent the material from having
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Which best describes energy changes in a system?a Energy is not conserved, but it cannot be created or destroyed. b Energy is
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2. 222 views
Christopher and his mother went on a camping trip. His mother struck a match to light a lantern. Which forms of energy did the
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Why are most oven mitts made out of cloth?a Cloth is a conductor and blocks the heat. b Cloth is an insulator and cannot conduct
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The thermal energy that flows from something at a higher temperature to something at a lower temperature. This is best described
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A blacksmith is heating a piece of iron over a fire. He takes the hot metal and places it into cold water. Explain how heat
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Magnetic fields run from ______________________ to ______________________.a north, south b west, east c south, north d east,
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When Ben holds an ice cube in his hand, which transfer of energy is taking place?a Both heat and coldness are being transferred.
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2. 234 views
The picture shows a woman running.What is the main type of energy conversion taking place? a Chemical energy is converted to
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2. 420 views
How can you strengthen an electromagnet? **Choose all that apply.**a increase the number of wire coils b decrease the number of
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2. 229 views
An example of a conductor would be....a a copper wire b glass cup c air d rubber covering on a wire
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2. 189 views
Which of the following has a higher kinetic energy?A 1000 kg car rolling at a speed of 5 m/s across the floor or a 1500 kg hippo
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2. 233 views
A pot is heated on a stove. Which process causes the metal handle of the pot to also become hot?a combustion b convection c
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2. 167 views
Question 7A metal pot with hot soup in it is placed on a cool stone countertop, as shown in the diagram below. The numbered
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2. 346 views
When a cup of hot chocolate is heated from 80 C to 90 C, which of the following is happening to the molecules of the liquid?a
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2. 140 views
When baking a cake, why are cake pans made out of metal?a Metal makes the cake taste better. b Metal conducts heat very well. c
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2. 180 views
If there is an increase in temperature, then the _____________. (Select the best response to complete the statement)a average
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2. 191 views
In order to measure the transfer of thermal energy from one temperature body to another, what device would be most useful?a
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2. 289 views
Hannah heats a beaker of water using a burner, as shown in the diagram.Which statement best describes the movement of water
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Which of the following interactions in the data set below will have an attractive electrical force?Interaction Object 1 Charge
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Observing a set of pith balls with positive charges, how does the distance between the pith balls affect the electric electrical
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Which of the following statements about electrical charges is true?(1 point)Responses When a combination of negative and
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What is the most likely explanation for the failed experiment?a The battery is too low voltage to work b The electromagnet needs
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Why does a girl skateboarding on a half-pipe not remain in motion forever?a none of the above b her energy is transformed into
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2. 282 views
At which location does the roller-coaster have the greatest amount of kinetic energy?a A b B c C d D
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If an object has a mass of 20 kg on a planet with a force of gravity of 4 m/s2. What is the object's weight?**Remember** W=mg a
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2. 170 views
A rock is taken from the Moon back to Earth. Which of the following correctly describes the changes to its mass and weight?a Its
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2. 230 views
Taylor says he likes using simple machines because they do his work for him. Alicia says that simple machines only help do the
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2. 370 views
Question 26The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle. What is
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When the North Pole of one magnet is held close to the South Pole of another magnet, the two magnets will:a do nothing b attract
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Mrs. Hankinson made the following electromagnet. What is the most likely explanation for the failed experiment?a The battery is
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2. 178 views
An electric current produces a(n):a magnetic field b solenoid c insulator d magnet
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Increasing the number of coils in an electromagnet will cause the strength of the magnetic field to decrease.True False
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Using the equation for Coulomb's Law, what happens to the force between two objects when you double the distance between them?\l
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The Coulomb is the SI unit for:a Distance b Charge c Work d Force
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According to Coulomb's Law, when the distance between two particles increases, the electrostatic force _____.a has no
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Every magnet, regardless of its shape, has twoa magnetic charges b magnetic fields c magnetic poles d magnetic needles
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The source of all magnetism is:a moving electric charges b ferromagnetic material c tiny domains of aligned atoms d tiny pieces
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If the value of F is positive, this tells us that the two objects are:a this doesn't give us any information about the objects b
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2. 285 views
In the equation for Coulomb's Law, q can have a negative value only.True False
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What is the unit for force?a Seconds b Joules c Newtons d Meters
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2. 114 views
How could you increase the strength of your electromagnet? (Select all that apply)a Decrease the current flowing through the
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2. 162 views
An ordinary steel bolt can be turned into a magnet.True False
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2. 168 views
A nail can be magnetized when it comes into contact with a permanent magnet because its domains become aligned.True False
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2. 141 views
Which of the following are uses of magnets (Select all that apply)a MRI machines b Bird Migration c Creating energy d Maglev
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2. 242 views
Magnets are made primarily of iron, nickel, and gold.True False
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2. 154 views
All magnets are permanent magnets.True False
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2. 100 views
Where is the magnetic field the strongest?a Close to the magnet b The magnetic field is the same strength no matter where you
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2. 159 views
Magnetic fields always go from South to North.True False
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the electric or magnetic force that acts between like charged objects, causing them to push apart
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2. 135 views
the electric or magnetic forces that acts between oppositely charged objects, causing them to be pulled together
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2. 123 views
What will happen with the magnets below?a nothing will happen b not enough information to determine c they will attract d they
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2. 109 views
A(n) is created by passing current through a coil of wire wrapped about an iron core.a permanent magnet b motor c electromagnet
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2. 340 views
The faster an object moves the _____________ kinetic energy it has.a more b less c same d not enough information
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2. 222 views
Which of the following has the greatest potential energy?a a 15 kg cat at underneath the tree b a 5 kg squirrel in the middle of
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2. 514 views
If Mr. Jones was moved from Earth to the moon, what would change?a weight b mass c height d hair color
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2. 330 views
How do simple machines make work easier?a by reducing the amount of force required b by reducing the amount of energy required c
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2. 175 views
What is an example of chemical energy transforming to mechanical energy?a sunlight charging up solar panels b a girl pedaling a
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2. 248 views
What is the unit used to denote energy?a Newton b Joule c Watt d Coulomb
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2. 179 views
Heat is an example of "wasted energy. "True False
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2. 209 views
A car transforms chemical energy into _____________________________ energy.a kinetic b potential c radiative d mechanical
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2. 178 views
What are materials that are poor conductors of thermal energy called?Shivering GIFs | Tenor a kinetic modulators b coolers c
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Glass and ________________ can be considered insulators.a rubber b copper c silk d air
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2. 212 views
Metal and _____________________ are considered conductors.a rubber b silk c air d water
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Materials that do not allow heat and electricity to flow easily are...a conductors b nonconductors c resistors d insulators
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Which type material allows heat and electricity to flow freely?a insulator b resistor c conductor d non-conductor
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2. 241 views
distribute heat in its surroundings
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occurs when matter with higher kinetic or thermal energy interacts with matter that is lower in energy; energy moves from high
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Review the examples below. Which would be considered an example of convection.a boiling water on a hot stove b sunlight warming
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Convection is most effective in liquids and gases.True False
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Conduction is most effective in liquids and gases.True False
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2. 269 views
Why does an aluminum block feel colder to the touch than a paperback book when you pick them up even though both objects are at
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2. 429 views
What happened at point C to end with D?a The surrounding air transferred thermal energy to A and B to equalize both in D. Air is
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Which way does heat energy flow?a from cold to hot b from hot to cold c heat energy does not flow
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Which has more thermal energy, a massive iceberg or a cup of coffee?a A cup of coffee, due to its mass b An iceberg because it
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2. 216 views
When you double the amount of coffee, you also double the
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When you double the amount of coffee, you also double the _______________.a neither is doubled b thermal energy c temperature
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What does the thermal energy of matter depend upon?a Temperature, only b Number of particles, only c Mass, number of particles
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2. 135 views
Hija, ¿ ____ el piano?
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Sí, mamá. ____ por una horatocaste toco tocaron tocamos toque
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2. 99 views
Sí, mamá. ____ por una hora
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Yo _____ en esa ciudad.estoy viviendo vivé estoy vivo estoy vivido
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Yo _____ en esa ciudad.
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2. 106 views