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Study Guide-Standards S8P2 (C) and S8P5 (B and C)
Multiple Choice
Identify the choice that best completes the statement or answers the question.
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1. What type of energy comes from a compound that changes as its atoms are rearranged?
a. kinetic energy
c. thermal energy
b. chemical energy
d. light energy
2. Which of the following is due to the random motion of particles?
a. kinetic energy
c. thermal energy
b. nuclear energy
d. sound energy
3. Which energy is caused by an object’s vibrations?
a. thermal energy
c. chemical energy
b. electrical energy
d. sound energy
4. Which of the following is the energy that comes from changes in an atom’s nucleus?
a. thermal energy
c. nuclear energy
b. light energy
d. chemical energy
5. What do you call change from one form of energy to another?
a. energy change
c. energy conversion
b. conversion of power
d. energy transfer
6. When you wind a rubber band on a toy airplane, what type of energy does the rubber band have?
a. kinetic energy
c. thermal energy
b. elastic potential energy
d. mechanical energy
7. In photosynthesis, what type of energy is used to make new substances?
a. sound energy
c. thermal energy
b. light energy
d. chemical energy
8. Your body uses the chemical energy in food to make which type of energy?
a. kinetic
c. potential
b. light
d. sound
9. In a hair dryer, electrical energy is changed into which type of energy that is used to dry your hair?
a. light
c. thermal
b. nuclear
d. chemical
10. Which type of energy makes a light bulb feel warm?
a. light energy
c. thermal energy
b. electrical energy
d. nuclear energy
11. Whenever one form of energy is converted into another, some of the original energy is always converted into
which type of energy?
a. light
c. kinetic
b. thermal
d. sound
12. What type of energy does a nuclear power plant generate to boil water?
a. thermal
c. light
b. sound
d. chemical
13. When a bat hits a baseball, what is transferred from the bat to the ball?
a. work
c. force
b. energy
d. electrical energy
14. As a baseball flies through the air after being hit, which type of energy does it have?
a. potential energy
c. mechanical energy
b. kinetic energy
d. chemical energy
____ 15. What is a force that opposes motion between two surfaces that are touching?
a. friction
c. nuclear fission
b. kinetic energy
d. electrical energy
____ 16. What happens when electrical energy is changed to thermal energy?
a. An energy change takes place.
c. An energy conversion takes place.
b. A force change takes place.
d. An electrical conversion takes place.
____ 17. When you eat fruits and vegetables, what type of energy are you taking in?
a. thermal
c. electrical
b. sound
d. chemical
____ 18. Which of the following is a conversion from light energy to chemical energy?
a. turning on a stove to heat dinner
c. growing an apple tree
b. turning on a lamp
d. making toast in a toaster
____ 19. When is the potential energy the greatest in a roller coaster?
a. at the bottom of the first hill
c. at the top of the second hill
b. at the top of the first hill
d. at the bottom of the second hill
____ 20. After energy conversions, you end up with the same total amount of energy as the original amount of
potential energy. Which law explains this rule?
a. law of energy changes
c. law of power and energy
b. law of conservation of energy
d. law of potential energy
____ 21. Any time an energy conversion takes place, some of the original energy is converted to which one of the
following?
a. sound
c. light
b. potential
d. thermal
____ 22. Suppose you are jumping on a trampoline. At the top of your jump, which of these is true?
a. The mechanical energy is zero.
b. The potential energy is at a maximum.
c. The kinetic energy and potential energy are equal.
d. The potential energy is zero.
____ 23. What are the tiny particles that make up matter?
a. charges
c. electricity
b. atoms
d. forces
____ 24. What is the region around a charged object where an electric force is present?
a. electric force
c. electric field
b. proton
d. electron
____ 25. What happens when electrons move from one object to another by direct contact?
a. friction
c. induction
b. detection
d. conduction
____ 26. If a material does not allow charges to move through it easily, what is it called?
a. electrical insulator
c. static electricity
b. electrical conductor
d. electric discharge
____ 27. What does the size of a current depend upon?
a. protons
c. voltage
b. electrons
d. charge
____ 28. As resistance goes up, what happens to the current
a. Current goes up.
c. Current stays the same.
b. Current goes down.
d. Current disappears.
____ 29. What is the rate at which electrical energy is changed into other forms of energy?
a. electric power
c. electrical energy
b. voltage
d. amps
____ 30. Circuits need three basic parts, an energy source, wires, and what else?
a. charge
c. load
b. force
d. energy
____ 31. How many pathways are there for moving charges in a series circuit?
a. one
c. three
b. two
d. four
____ 32. Why are protons and electrons attracted to each other?
a. because protons have a positive charge and electrons have a negative charge
b. because protons have a negative charge and electrons have a positive charge
c. because they both are positively charged
d. because they both are negatively charged
____ 33. The size of an electric force depends upon which two things?
a. the amount of each charge and the size of the electric field
b. the distance between the charges and the size of the electric field
c. the number of protons and the distance between the charges
d. the amount of each charge and the distance between the charges
____ 34. Which of the following is NOT an insulator?
a. air
c. glass
b. wood
d. copper
____ 35. What generates electrical energy from chemical energy?
a. cell
c. circuit
b. switch
d. current
____ 36. What is the third part of an electric circuit besides the wires and the load?
a. force
c. current
b. voltage
d. energy source
____ 37. Which of these would lower the electrical resistance of a wire?
a. making the wire thinner
b. increasing the wire’s length
c. lowering the temperature of the wire
d. using denser material for the wire
____ 38. What is the rate at which charges pass a given point?
a. electrical energy
c. electric current
b. ohms
d. voltage
____ 39. What goes down as resistance goes up?
a. Power goes down.
c. Current goes down.
b. Charge goes down.
d. Temperature goes down.
____ 40. As voltage goes up, what happens to current?
a. Current stays the same.
c. Current goes down.
b. Current goes up.
d. Current drops to 0 A.
____ 41. Good conductors have low
a. voltage.
c. current.
b. resistance.
d. temperature.
____ 42. Two poles, magnetic forces, and magnetic fields are magnets’
a. auroras.
c. domains.
b. alignments.
d. properties.
____ 43. What does electric current produce?
a. a solenoid
c. an aurora
b. a magnetic field
d. a bar magnet
____ 44. What strengthens a magnetic field made by a current-carrying wire?
a. solenoid and electric current
b. electromagnet and electric motor
c. electromagnet and solenoid
d. only an electromagnet
____ 45. Electric current that changes direction is called
a. generated current.
c. alternating current.
b. mechanical energy.
d. direct current.
____ 46. Whether a material is magnetic or not depends on which of the following?
a. the material’s weight
c. the material’s atoms
b. the material’s mass
d. the material’s density
____ 47. As electrons move, they make
a. electromagnetism.
c. ferromagnetism.
b. magnetic fields.
d. auroras.
____ 48. A compass needle responds to a magnetic field, because the compass needle is a
a. transformer.
c. motor.
b. generator.
d. magnet.
____ 49. What is created when a magnet moves through a coil of wire?
a. an electric current
c. a solenoid
b. an electromagnet
d. a ferromagnet
____ 50. What is created when a wire moves between the poles of a magnet?
a. an electric current
c. a solenoid
b. an electromagnet
d. a ferromagnet
____ 51. A coil of wire that has a soft iron core and that acts as a magnet when an electric current is in the coil is called
a(n)
a. ferromagnet.
c. permanent magnet.
b. electromagnet.
d. temporary magnet.
____ 52. Increasing the number of loops per meter in the coils of a solenoid is one way to
a. increase the wire’s electric current.
b. decrease the wire’s electric current.
c. strengthen the solenoid’s magnetic field.
d. weaken the solenoid’s magnetic field.
____ 53. Increasing the electric current in the wire is one way to
a. strengthen a solenoid’s magnetic field.
b. weaken a solenoid’s magnetic field.
c. make a solenoid become an electromagnet.
d. make an electromagnet become a solenoid.
____ 54. What did Faraday’s experiments with magnets and electromagnetic induction demonstrate?
a. Strong electromagnets make electric current.
b. Electric current is made when the magnetic field changes.
c. Strong electric current makes electromagnets.
d. Magnetic fields are made when the electric field changes.
____ 55. What creates a magnetic field?
a. an atom’s moving neutrinos
c. an atom’s moving electrons
b. an atom’s moving neutrons
d. an atom’s moving protons
____ 56. Where are the strongest magnetic effects on magnets?
a. In the middle of the magnet.
b. At both poles of the magnet.
c. At only the magnet’s north pole.
d. Only at the magnet’s south pole
____ 57. The part of a magnet that points north is called its
a. geographic north pole.
c. magnetic north pole.
b. geographic south pole.
d. magnetic south pole.
____ 58. Which of the following makes a solenoid become an electromagnet?
a. increasing the number of loops in the coil
b. increasing the strength of the electric current
c. adding an iron core
d. adding an copper core
____ 59. What do spinning electric charges generate?
a. a magnetic force
c. an electromagnet
b. a ferromagnet
d. an aurora