Download Study Guide 1 energy

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Name: ____________________
Types of Energy (.5 pts. each)
1. Which of the following is the correct definition of electrical energy?
A. energy resulting from the movement of electrons.
B. energy of an object due to the random motion of its atoms and molecules
C. energy that is transmitted in the form of electromagnetic waves
D. energy an object has because of its motion or position
2.
Kelly is sledding on a snowy hill in the winter. The energy the sled has as it slides
down the hill is a form of
A. electrical energy.
B. chemical energy.
C. nuclear energy.
D. mechanical energy.
3. Which of the following is the correct definition of acoustic energy?
A. energy due to the vibration of an object
B. energy of an object due to the random motion of its atoms and molecules
C. energy an object has because of its motion or position
D.
energy resulting from the flow of charge particles, such as electrons or ions
4. Which of the following is a source of chemical energy?
A. a bicycle
B. water flowing in a river
C. a sandwich
D. turning on a light switch
5. Mechanical energy is a term that is used to describe...
A. potential energy only.
B. both potential and kinetic energy.
C. neither potential nor kinetic energy.
D. kinetic energy only.
A
B
D
C
Use the diagram of the rollercoaster above to answer questions 6-8. Position A is the
starting point for the rollercoaster.
6. At which position will the rollercoaster car have the most potential energy?
A. Position C
B. Position B
C. Position D
D. Position A
7. At which position will the rollercoaster car have the most kinetic energy?
A. Position C
B. Position B
C. Position D
D. Position A
8. Short Answer (2 pts.): Describe how potential energy and kinetic energy change as the
rollercoaster car starts at Position A and travels to Position D.
9. There is a skier at the top of a ski slope. The skier has potential energy. What
gives the skier his potential energy?
A. gravity
B. his speed
C. friction
D. his efficiency
10. What type of energy is being given off from a radio?
A. chemical
B. nuclear
C. acoustic
D. thermal
Energy Conversions
12. A stone held above the ground has potential energy. When the stone is dropped,
potential energy is converted to _________ energy.
A. chemical
B. thermal
C. kinetic
D. electrical
13. In an alarm clock, electrical energy is changed into which type of energy that is used to display
the clock?
A. radiant energy
B. nuclear energy
C. thermal energy
D. chemical energy
14. The electric pencil sharpener in Mrs. Brown's classroom gets very warm on days
when many students need to sharpen their pencils. Choose the form of energy to
fill in the blank in the energy conversion diagram below.
Electrical Energy
__________
Heat Energy
A. Chemical Energy
B. Light Energy
C. Nuclear Energy
D. Mechanical Energy
15. When you do physical exercise, the _____ energy stored in the carbohydrate,
fat, and other molecules in the cells of your body is converted to energy of
motion.
A. heat
B. wind
C. solar
D. chemical
16. When you talk on the phone, your voice is transformed into electrical energy,
which passes over wires or is transmitted through the air. What kind of energy
does the speaker in the phone on the other end change the electrical energy
into?
A. sound
B. heat
C. light
D. mechanical
17. When energy changes from one form to another, some energy is always changed
to
A. light.
B. sound.
C. heat.
D. electricity.
18. A light bulb is turned on. It produces light and warms up. Which statement is
true?
A. All the electrical energy is transformed to light energy.
B. All the electrical energy is transformed to light energy and heat energy.
C. All the electrical energy is transformed to heat energy.
D. Some of the electrical energy is transformed to light energy and some is destroyed.
19. Cynthia is holding a sheet of paper that has a mass of 2 grams. She tears the
sheet of paper into many small pieces. Which of the following is true?
A. The sum of the mass of all the pieces of paper is 2 grams.
B. The sum of the mass of all the pieces of paper is more than 2 grams.
C. The sum of the mass of all the pieces of paper is less than 2 grams.
D. Each piece of paper has a mass of 2 grams.
20. Which of the following best describes the law of conservation of energy?
A. Energy can only be created and is never destroyed.
B. Energy can be destroyed and does not change.
C. Energy can be destroyed or created and never changes.
D. Energy cannot be created or destroyed, it can only change forms.
21. Select the correct Law of Conservation of Matter.
A. Matter changes form, but it cannot be created or destroyed.
B. Matter is created or destroyed at an equal rate that energy is created or
destroyed.
C. During a chemical reaction, matter is created.
D. During a chemical reaction, matter is lost.
Vocabulary Matching (.5 pts. each)
1. Volts _____
A. Electromagnetic Energy that travels in waves. Includes light, x-rays,
gamma rays and radio waves.
2. Joules _____
B. This is the standard unit of measure for work or energy.
3. Watts _____
C. This is the internal energy in substances (vibration and movement
of atoms and molecules).
4. Mechanical Energy _____
D. Movement of energy through substances in waves. Caused by
vibration.
5. Acoustic Energy _____
E. This is the measure of the flow of electrons (how many electrons go
past a point in a minute)
6. Chemical Energy _____
F. The FORCE or POWER of the electrical flow.
7. Ohms _____
G. Biomass, Gasoline, and Petroleum contain this type of stored
energy
8. Amps _____
H. This is used to measure resistance to an electrical current.
9. Efficiency _____
I. Energy stored in the nucleus of an atom. Can be released by fission
(splitting) or Fusion (smashing together).
10. Nuclear Energy _____
J. This is a term for how much useful energy you can get out of a
system. No system can ever reach 100% of this.
11. Thermal Energy _____
K. This measures the amount of power produced or electricity
consumed (used)
12. Radiant Energy _____
L. Energy assosciated with the motion and position of an object. This
is kinetic + potential energy.