CHAPTER 5 Energy

6. What is the mass of the pendulum bob?
A. 2.7 kg
B. 5.3 kg
C. 6.3 kg
D. 52 kg
7. What is the difference, in J, in the gravitational
potential energy of a 7.75 kg book
that is 1.50 m above the ground and a
9.53 kg book that is 1.75 m above the
ground?
Use the figure below to answer question 8.
8. How does the mechanical energy of the
ball change from the moment just after
the batter hits it to the moment just before
it touches the ground?
9. Explain why the law of conservation of
energy also includes mass when applied to
nuclear reactions.
Standardized Test Practice gpescience.com
Use the figure below to answer question 10.
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10. The figure shows a nuclear reaction.
Part A Describe the process and explain
how it obeys the law of conservation
of energy.
Part B Describe how the total mass of the
particles before the reaction occurs
compares to the total mass of the
particles produced by the reaction.
11. Describe a process in which energy travels
through the environment and changes
from one form to another.
Show All your Work For extended response questions, show
all your work and any calculations on your answer sheet.
Question 10 On your answer sheet, list the energy changes
that occur during each step.
Xe
STANDARDIZED TEST PRACTICE 151
Sr