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Question

Energy is found in different forms such as light, thermal, sound and motion. If I'm cold and want to warm up with an electric heater, which energy would I need INITIALLY in order to make the heater work?

Question 4 options:

light energy

electrical energy

mechanical energy

potential energy

Question 5 (3 points)

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There are two windmills near a student’s town. The student wonders which one converts more wind energy into mechanical energy. What is the best way for the student to discover which windmill generates more mechanical energy?

Question 5 options:

She should measure the area and size of each windmill.

She should stand next to each windmill to feel which one gets more wind.

She should measure the height of each windmill.

She should count how many times each windmill spins in one minute.

Question 6 (3 points)

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As a baseball flies through the air after being hit, which of the following types of energy does it have?

Question 6 options:

kinetic energy

potential energy

mechanical energy

chemical

Question 7 (3 points)

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Two students both hit baseballs. Student X's ball travels twice as fast as Student W's ball. How does the kinetic energy of the two baseballs compare?

Question 7 options:

Both baseballs have the same amount of kinetic energy, because they have the same mass.

Student X's baseball has twice as much kinetic energy, because it travels twice the speed.

Student X's baseball has 4 times the kinetic energy, because it travels twice the speed.

Student W's baseball has twice as much kinetic energy, because it travels half the speed.

Question 8 (3 points)

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Analyze the diagram below.



What is the kinetic energy of a 400kg coaster at the bottom of the first hill where the height is 3.00m if the coaster is going at 250 m/s?

Question 8 options:

12,500,000 J

60,000 J

300,000 J

50,000 J

Question 9 (3 points)

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Three divers stand on three different platforms ready to dive, they all weigh 400 Newtons; the first platform is 10 meters high, the second platform is 15 meters high and the third platform is 20 meters high. Who has most gravitational potential energy?

Question 9 options:

the diver on the 20 meter platform

the diver on the 10 meter platform

they all have the same

the diver on the 15 meter platform

Question 10 (3 points)

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Three divers stand on a platform ready to dive, one weighs 400 Newtons, the second weighs 475 Newtons, and the third weighs 500 Newtons; all the platforms are the same height. Who has least gravitational potential energy?

Question 10 options:

they all have the same

the diver weighing 500 N

the diver weighing 400 N

the diver weighing 475 N

Question 11 (3 points)

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Which of the following converts chemical energy into electrical energy?

Question 11 options:

light bulb

toaster

battery

a dog playing with a bone

Question 12 (3 points)

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Energy is found in different forms such as light, heat, solar, sound and motion. However, if kinetic energy is one of two categories, which of the following is the second category?

Question 12 options:

light energy

potential energy

mechanical energy

electrical energy

Question 13 (3 points)

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Three divers stand on a platform ready to dive, one weighs 400 Newtons, the second weighs 475 Newtons, and the third weighs 500 Newtons; all the platforms are the same height. Who has more gravitational potential energy?

Question 13 options:

they all have the same

the diver weighing 400 N

the diver weighing 475 N

the diver weighing 500 N

Question 14 (3 points)

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Which example illustrates an object with the greatest potential energy?

Question 14 options:

a ball moving forward when pushed

a ball resting on a table top

a ball resting on top of a fridge

a ball resting on the ground

Question 15 (3 points)

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What example demonstrates an object that has kinetic energy?

Question 15 options:

A race horse at the starting line

A ball at the top of the hill

A pendulum swinging back and forth

A car at a stop sign waiting to go

Question 16 (3 points)

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What example demonstrates an object that has potential and kinetic energy?

Question 16 options:

A pendulum swinging back and forth

A car at a stop sign waiting to go

A ball at the top of the hill

A race horse at the starting line

Question 17 (3 points)

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At which letter would you have the most GPE?

Question 17 options:

B

A

Question 18 (3 points)

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After an energy conversion, you end up with the same total amount of energy as the original amount of potential energy. Which of the following laws explains this rule?

Question 18 options:

law of conservation of energy

law of power and energy

law of energy changes

law of potential energy

Question 19 (3 points)

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Any time an energy conversion takes place, some of the original energy is converted to which one of the following?

Question 19 options:

potential energy

light energy

thermal energy

sound energy

Question 20 (3 points)

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How can energy change?

Question 20 options:

temperature changes the type of energy

none of the above

electrical energy can change light energy

energy can be transferred from one object to another

Question 21 (3 points)

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In what unit are work and energy expressed in?

Question 21 options:

mass

Joules

speed

watts

Question 22 (3 points)

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Which forms of energy are stored?

Question 22 options:

electrical and sound

kinetic and light

nuclear and electrical

potential and chemical

Question 23 (3 points)

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Which example illustrates an object with the least gravitational potential energy?

Question 23 options:

a ball resting on a table top

a ball resting on top of a fridge

a ball moving forward when pushed

a ball resting on the ground

Question 24 (3 points)

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When you eat fruits and vegetables, which of the following types of energy are you taking in?

Question 24 options:

electrical energy

chemical energy

thermal energy

sound energy

Question 25 (3 points)

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What happens when energy is transferred?

Question 25 options:

it changes form

energy is being stored

it gains energy

it loses form

Answer 1

Here are the answers to the questions based on the information provided:

Question 4: If I'm cold and want to warm up with an electric heater, which energy would I need INITIALLY in order to make the heater work?

• Answer: electrical energy

Question 5: The best way for the student to discover which windmill generates more mechanical energy:

• Answer: She should count how many times each windmill spins in one minute.

Question 6: As a baseball flies through the air after being hit, which type of energy does it have?

• Answer: kinetic energy

Question 7: Student X's ball travels twice as fast as Student W's ball. How does the kinetic energy of the two baseballs compare?

• Answer: Student X's baseball has 4 times the kinetic energy because it travels twice the speed.

Question 8: What is the kinetic energy of a 400kg coaster at the bottom of the first hill where the height is 3.00m if the coaster is going at 250 m/s?

• Answer: 50,000 J (Note: This may require calculation using KE = 1/2 mv²).

Question 9: Who has the most gravitational potential energy?

• Answer: the diver on the 20 meter platform

Question 10: Who has the least gravitational potential energy?

• Answer: the diver weighing 400 N (lower weight equals lower potential energy, assuming equal height).

Question 11: Which of the following converts chemical energy into electrical energy?

• Answer: battery

Question 12: If kinetic energy is one of two categories, which is the second category?

• Answer: potential energy

Question 13: Who has more gravitational potential energy?

• Answer: the diver weighing 500 N

Question 14: Which example illustrates an object with the greatest potential energy?

• Answer: a ball resting on top of a fridge

Question 15: What example demonstrates an object that has kinetic energy?

• Answer: A pendulum swinging back and forth

Question 16: What example demonstrates an object that has potential and kinetic energy?

• Answer: A pendulum swinging back and forth

Question 17: At which letter would you have the most GPE?

• Answer: A (assuming A represents a higher position than B)

Question 18: The law that explains the rule regarding energy conversion and total energy:

• Answer: law of conservation of energy

Question 19: Any time an energy conversion takes place, some of the original energy is converted to which one of the following?

• Answer: thermal energy

Question 20: How can energy change?

• Answer: energy can be transferred from one object to another

Question 21: In what unit are work and energy expressed in?

• Answer: Joules

Question 22: Which forms of energy are stored?

• Answer: potential and chemical

Question 23: Which example illustrates an object with the least gravitational potential energy?

• Answer: a ball resting on the ground

Question 24: When you eat fruits and vegetables, which of the following types of energy are you taking in?

• Answer: chemical energy

Question 25: What happens when energy is transferred?

• Answer: it changes form

Feel free to ask if you need further assistance or explanations!