Question

unit 1 harnessing human energy: review
fill in the blank: fill in the blank with the correct words.

1. the energy stored in an object is called ____________.
2. the energy of a moving object is called ____________.
3. according to the law of ____________ of energy, energy cannot be created or destroyed.
4. when you lift a book onto a shelf, you give it ____________ energy.
5. as a roller coaster goes down a hill, its potential energy is transformed into ____________ energy.
6. when you stretch a rubber band, you are ____________ energy in it.
7. the energy stored up in an item is ____________ to the energy it has when its moving.
8. when a lamp is turned on, electrical energy is ____________ into light energy.
9. when you kick a ball, you ____________ energy from your foot to the ball.
10. a battery stores ____________ energy that can be used later.

word bank:
kinetic, conservation, potential, kinetic, potential, chemical, converted, transferring, storing,
equal
multiple choice questions: choose the correct answer from the choices for each question.

1. which of the following is an example of potential energy?

a) a car driving down the road
b) a ball at the top of a hill
c) a spinning top
d) a running dog

1. what happens to the energy of a swinging pendulum as it moves from highest to lowest point?

a) kinetic energy becomes potential energy
b) all energy is lost
c) potential energy becomes kinetic energy
d) energy is created

1. which statement best describes the law of conservation of energy?

a) energy can be created and destroyed

Explanation:

Fill in the Blank Answers:

1. The energy stored in an object is called \(\boldsymbol{\text{potential}}\).
2. The energy of a moving object is called \(\boldsymbol{\text{kinetic}}\).
3. According to the law of \(\boldsymbol{\text{conservation}}\) of energy, energy cannot be created or destroyed.
4. When you lift a book onto a shelf, you give it \(\boldsymbol{\text{potential}}\) energy.
5. As a roller coaster goes down a hill, its potential energy is transformed into \(\boldsymbol{\text{kinetic}}\) energy.
6. When you stretch a rubber band, you are \(\boldsymbol{\text{storing}}\) energy in it.
7. The energy stored up in an item is \(\boldsymbol{\text{equal}}\) to the energy it has when it’s moving.
8. When a lamp is turned on, electrical energy is \(\boldsymbol{\text{converted}}\) into light energy.
9. When you kick a ball, you \(\boldsymbol{\text{transfer}}\) energy from your foot to the ball.
10. A battery stores \(\boldsymbol{\text{chemical}}\) energy that can be used later.

Multiple Choice Answers:

1. Question 1:

• Potential energy is stored energy (e.g., due to position). A ball at the top of a hill has stored energy (potential) from height. A car driving, spinning top, or running dog have kinetic (moving) energy.
• Answer: B. A ball at the top of a hill

1. Question 2:

• At the highest point, a pendulum has maximum potential energy (stored from height) and minimum kinetic energy (speed). As it swings down, height decreases (potential energy decreases), and speed increases (kinetic energy increases). Thus, potential energy converts to kinetic energy.
• Answer: C. Potential energy becomes kinetic energy

1. Question 3 (incomplete in the image, but based on the law of conservation of energy):

• The law of conservation of energy states energy cannot be created or destroyed, only transformed/transferred. So the correct statement would reject “created/destroyed” (like option A) and align with conservation. If options included “Energy is conserved (cannot be created/destroyed),” that would be correct. Assuming standard options, the answer would refute creation/destruction.

(Note: For Question 3, if the full options were provided, the reasoning would target the option matching “energy cannot be created or destroyed, only transformed/transferred.”)

Answer:

Fill in the Blank Answers:

1. The energy stored in an object is called \(\boldsymbol{\text{potential}}\).
2. The energy of a moving object is called \(\boldsymbol{\text{kinetic}}\).
3. According to the law of \(\boldsymbol{\text{conservation}}\) of energy, energy cannot be created or destroyed.
4. When you lift a book onto a shelf, you give it \(\boldsymbol{\text{potential}}\) energy.
5. As a roller coaster goes down a hill, its potential energy is transformed into \(\boldsymbol{\text{kinetic}}\) energy.
6. When you stretch a rubber band, you are \(\boldsymbol{\text{storing}}\) energy in it.
7. The energy stored up in an item is \(\boldsymbol{\text{equal}}\) to the energy it has when it’s moving.
8. When a lamp is turned on, electrical energy is \(\boldsymbol{\text{converted}}\) into light energy.
9. When you kick a ball, you \(\boldsymbol{\text{transfer}}\) energy from your foot to the ball.
10. A battery stores \(\boldsymbol{\text{chemical}}\) energy that can be used later.

Multiple Choice Answers:

1. Question 1:

• Potential energy is stored energy (e.g., due to position). A ball at the top of a hill has stored energy (potential) from height. A car driving, spinning top, or running dog have kinetic (moving) energy.
• Answer: B. A ball at the top of a hill

1. Question 2:

• At the highest point, a pendulum has maximum potential energy (stored from height) and minimum kinetic energy (speed). As it swings down, height decreases (potential energy decreases), and speed increases (kinetic energy increases). Thus, potential energy converts to kinetic energy.
• Answer: C. Potential energy becomes kinetic energy

1. Question 3 (incomplete in the image, but based on the law of conservation of energy):

• The law of conservation of energy states energy cannot be created or destroyed, only transformed/transferred. So the correct statement would reject “created/destroyed” (like option A) and align with conservation. If options included “Energy is conserved (cannot be created/destroyed),” that would be correct. Assuming standard options, the answer would refute creation/destruction.

(Note: For Question 3, if the full options were provided, the reasoning would target the option matching “energy cannot be created or destroyed, only transformed/transferred.”)