Author: Dallas ISD

#	Vocabulary Word	Definition
1	Energy Transfer
2	Chemical Energy
3	Heat Energy
4	Thermal energy
5	Work
6	Force
7	Distance
8	W= F x D
9	Ramp
10	Inclined Plane
11	Newton (N)
12	Joul (J)
13	Meter (M)
14	Digestion
15	Potential Energy
16	Kinetic Energy

Name: ____________________________________ Period: ____
Vocabulary:

Please Turn Over

A clerk at a hardware store performed the activities in the list.
1. Pushed a 300 N box for 5 m across floor using 110N of force
2. Lifted a 490 N Box of tools from the floor to a shelf 1.5 m high
3. Held a 50 N clay pot for 4 minutes for a customer while the customer did more
Shopping.
Which statement best describes the amount of work performed for the three activities?
A: Activity 3 required more work than activity 1, but activity 3 did not require more work than activity 2
B: Activity 1 required the same amount of work as activity 3
C: Activity 2 required the most work
D: Activity 1 was the only activity that required work
2.

3.

4.

A large man is pushing a 150-pound box up a ramp into a truck, as shown in the picture below. (7.7A)
If the man were to lift the box straight up into the truck instead of using the ramp, what would be the difference in the amount of work done assuming there is no friction?
The amount of work would increase greatly.
B. The amount of work would increase slightly.
C. The amount of work would be the same.
D. The amount of work would decrease.

5. Thermal energy that is transferred from matter at a higher temperature to matter at a lower temperature is called
A: Kinetic Energy
B: Heat
C: Temperature
6. How is heat transferred?
A: heat is transferred from a warmer object to a cooler object
B: Heat is transferred from a cooler object to a warmer object
C: Heat moves simultaneously through both objects
The food you eat is made of complex and simple molecules. In digestion, food is broken down into simpler substances. The potential chemical energy of food is
transformed into the energy used by the body to do work.
What evidence exists that shows that in the human body, during digestion,
chemical energy is transformed into another form of energy?
A: heat is released that keeps the body warm
B: waste materials are eliminated
C: Respiration or breathing takes place
D: Food is chewed into smaller pieces
8. Which of the following best illustrates energy transformation when humans consume food?
A: chemical energy to light energy C: kinetic energy to potential energy
B: heat energy to chemical energy D: chemical energy to thermal energy
9. What energy transformation is taking place when we eat food so can keep warm?
A: mechanical to thermal C: chemical to thermal
B: mechanical to radiation D: radiant to chemical