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JAN – PATHFINDER
SCIENCE
Section 1
Read each question carefully. Choose the most suitable answer.
1. What is energy?
A. Energy is anything that has mass.
B. Energy is the ability to do work or to cause change.
C. Energy is the amount of food the body needs to keep functioning.
D. Energy is a set of things working together as parts of a mechanism.
2. The following are examples of the various forms of energy, except:
I.
light energy
II.
wind energy
III.
sound energy
IV.
water energy
A.
B.
C.
D.
3.
I and II
II and IV
I, III and IV
All of the above
Which of the following is true about kinetic energy?
A. Kinetic energy is the energy of motion.
B. Kinetic energy is a kind of stored energy that objects have because of their
position or configuration.
C. Not all moving things have kinetic energy.
D. Wind and water do not have kinetic energy.
4. Kelvin is making a small table. He sticks a nail into a piece of wood and hits the nail
using a hammer. Which form of energy is not released when the hammer hits the nail?
A. sound
B. thermal
C. electrical
D. kinetic
Section 2
Answer the questions in the spaces provided.
5. The picture below is of a cup on a table. Answer the questions based on the diagram
below.
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a. What energy does the cup have as it sits on the table?
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b. Define the energy in answer a.
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c. David accidentally knocks the cup of the table. What energy does the cup have now?
Explain.
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Answer Key
Section 1
1. B. Energy is the ability to do work or to cause change.
Tip: We use energy to do work and make all movements. When we eat, our bodies
transform the food into energy to do work. When we run or walk or do some work, we ‘burn’
energy in our bodies.
2. B. II and IV
Tip: Energy comes in six forms: chemical energy, electrical energy, radiant energy,
mechanical energy, nuclear energy and thermal energy. Wind is a form of solar
energy. Winds are caused by the uneven heating of the atmosphere by the sun, the
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irregularities of the earth's surface, and rotation of the earth.
3. A. Kinetic energy is the energy of motion.
Tip: An object that has motion whether it is vertical or horizontal motion, has
kinetic energy.
4. C. Electrical
Tip: Electrical energy is energy that is caused by moving electric charges.
Section 2
5. a. The cup has potential energy.
b. Potential energy is the kind of stored energy that objects have because of their
position or configuration.
c. Gravity accelerates the cup, and its potential energy will convert to kinetic
energy.
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