Download refelction - WordPress.com

UNIT 3A ENERGY TEST REVIEW
Name: _______________________
Date: _________________
1.
2.
3.
4.
ENERGY CAN BE ___________________ FROM ONE TYPE TO ANOTHER TYPE
WHERE DOES ENERGY OF THE EARTH COME FROM?
___________________ ENERGY COMES FROM THE MOVEMENT OF CHARGED PARTICLES
THERMAL ENERGY IS TRANSFERRED THROUGH A MATERIAL BY THE COLLISION OF
_________________ WITHIN THE MATERIAL
5. MECHANICAL ENERGY IS THE SUM OF WHICH TWO ENERGY SOURCES?
6. WHAT TYPE OF ENERGY IS STORED IN PARTICLES THAT MAKE UP FOOD AND OTHER FUELS?
7. WHAT IS NUCLEAR ENERGY?
8. BONUS: WHAT IS ENERGY….? REALLY?
9. _______________ IS THE ABILITY TO CAUSE CHANGES OR DO WORK
10. WHAT HAPPENS WHEN YOU HEAT A SOLID?
11. THE ENERGY OF A MOVING OBJECT IS CALLED _____________ ENERGY
12. STORED ENERGY IS CALLED _____________ ENERGY
13. ENERGY CAN CHANGE FROM ONE FORM TO ANOTHER T OR F
14. WRITE IN ORDER OF INCREASING KINETIC ENERGY: SOLID, LIQUID, GAS
15. IN WHAT DIRECTION DOES THE TRANSFER OF ENERGY FROM HEAT MOVE BETWEEN A HOTTER
AND COLDER OBJECT?
16. THIS VOCABULARY WORD IS REFERRING TO HEAT:
17. THE TEMPERATURE TWO OBJECTS REACH WHEN THEY TOUCH:
1
18._______________ IS THE ABILITY TO CAUSE CHANGES OR DO WORK. IT MAKES
THINGS ____________.
19.DURING THE DAY, THE SAND AT THE BEACH IS VERY WARM, WHILE AT NIGHT ITS
COOLER. WHY?
20.IF YOU PLACE A HOT STONE IN BEAKER OF COLD WATER, WHAT WOULD HAPPEN
TO THE STONE AND WATER AFTER 10 MINUTES?
21.ENERGY CAN CHANGE FROM ONE FORM TO ANOTHER TRUE OR FALSE
22.WRITE IN ORDER OF INCREASING KINETIC ENERGY: SOLID, LIQUID, GAS
23.IN WHAT DIRECTION DOES THE TRANSFER OF ENERGY FROM HEAT MOVE
BETWEEN A HOTTER AND COLDER OBJECT?
24.WHAT IS #7 CALLED?
25.THIS VOCABULARY WORD IS REFERRING TO HEAT:
26.THE TEMPERATURE TWO OBJECTS REACH WHEN THEY TOUCH:
27.CHOOSE CORRECT ANSWER: MATERIALS GET WARMER FROM THE ABSORPTION
OR REFELCTION OF LIGHT BECAUSE TRANSFERRED LIGHT EMITS HEAT.
2
28.CAN KINETIC ENERGY EVER BE BIGGER THAN POTENTIAL ENERGY? WHY?
29.WHERE DOES ELECTRICITY COME FROM?
30.NAME TWO TYPES OF ENERGY ELECTRICAL ENERGY IS CONVERTED TO?
31.HOW IS ENERGY TRANSFERRED FROM THE SUN TO EARTH?
32. Which has more heat energy? A small candle flame or a large ice sculpture and why?
3
33. Why did the teacher need a pair of heat resistant rubber gloves when I touched the hot beakers
during lab?
a. Rubber is a poor conductor of heat and electricity
b. Rubber is a good conductor of heat and electricity
c. Rubber is a poor conductor of electricity and a good conductor of heat
34. Which one is considered a good insulator of heat?
a. Plastic, because heat is unable to flow through it
b. Glass, because heat is able to flow easily
c. Aluminum, because it allows heat to flow easily
35. A pot is heated on the stove. Why is the metal handle hot?
a. Conduction
b. Convection
c. Radiation
36. What is responsible for the uneven heating in the atmosphere?
a. Conduction
b. Convection
c. Radiation
37. Why can you feel the heat around the campfire even though you don’t touch it
a. Conduction
b. Convection
c. Radiation
38. Why is there a difference in temperature when you are standing in a pool?
a. Conduction
b. Convection
c. Radiation
39. What is the best material for conducting electricity or heat?
a. Wood
b. Metal
c. Stone
d. Plastic
40. Why shouldn’t you use a metal fork to remove a piece of toast from a toaster?
4
41. What is the best material to use in the circuit below to make light glow? Why?
Plastic straw
Cotton string
Aluminum foil
Rubber eraser
42. Circle correct answer: Materials will generally become warmer through the absorption/reflection
of light because light when transferred will emit/absorb heat.
BONUS:
43. What does energy transfer mean? Give an example
44. What dos energy transformation mean? Give an example
45. Give an example of energy transformation using one of the following types of energy: Chemical,
mechanical, sound, nuclear, thermal
46. What is another name for transformed?
5
47. When energy is transferred or transformed, what happens to the total energy of the system?
48. When an electromagnetic waves strike a pipe, what usually happens?
a. The pipe gets cooler
b. The pipe reflects all of the waves
c. The pipe absorbs some of the rays
49. Why are metals used for making pots and pans?
a. Metals conduct heat and have a high melting point
b. Metals conduct heat and have low melting pong
c. Metals radiate heat and have high melting point
50. Why do electric cords come with plastic coating wrapped over the wires?
a. Plastic is a conductor and prevents wires from shocking you
b. Plastic is an insulator and prevents wires from shocking you
c. Plastic makes the wires look neat
51. A student notices that an inflated balloon gets larger when it is warmed up by a lamp. What caused the
balloon to become larger?
a. The heat from lamp caused the particles of the balloon to contract, making it larger
b. The heat from lamp caused the particles of balloon to expand, making it larger
UNIT 3A ENERGY TEST REVIEW KEY
1.
2.
3.
4.
ENERGY CAN BE TRANSFORMED FROM ONE TYPE TO ANOTHER TYPE
WHERE DOES ENERGY OF THE EARTH COME FROM? From the sun
ELECTRICAL ENERGY COMES FROM THE MOVEMENT OF CHARGED PARTICLES
THERMAL ENERGY IS TRANSFERRED THROUGH A MATERIAL BY THE COLLISION OF ATOMS WITHIN THE
MATERIAL
5. MECHANICAL ENERGY IS THE SUM OF WHICH TWO ENERGY SOURCES? KINETIC AND POTENTIAL
6. WHAT TYPE OF ENERGY IS STORED IN PARTICLES THAT MAKE UP FOOD AND OTHER FUELS? CHEMICAL
7. BONUS: WHAT IS NUCLEAR ENERGY? POTENTIAL ENERGY STORED WITHIN THE BONDS BETWEEN
PROTONS AND NEUTRONS OF AN ATOM
8. What is energy? Really? The ability to do work
9. _________Energy______ IS THE ABILITY TO CAUSE CHANGES OR DO WORK
10. WHAT HAPPENS WHEN YOU HEAT A SOLID? Atoms vibrate faster
11. THE ENERGY OF A MOVING OBJECT IS CALLED _____kinetic________ ENERGY
12. STORED ENERGY IS CALLED ___potential__________ ENERGY
6
13. ENERGY CAN CHANGE FROM ONE FORM TO ANOTHER T OR F TRUE
14. WRITE IN ORDER OF INCREASING KINETIC ENERGY: SOLID, LIQUID, GAS
15. IN WHAT DIRECTION DOES THE TRANSFER OF ENERGY FROM HEAT MOVE BETWEEN A HOTTER AND
COLDER OBJECT? Hot to cold
16. THIS VOCABULARY WORD IS REFERRING TO HEAT: thermal
17. THE TEMPERATURE TWO OBJECTS REACH WHEN THEY TOUCH: reach equilibrium
18. ENERGY IS THE ABILITY TO CAUSE CHANGES OR DO WORK. IT MAKES THINGS MOVE.
19. DURING THE DAY, THE SAND AT THE BEACH IS VERY WARM, WHILE AT NIGHT ITS COOLER. WHY?
A. THE SAND REFLECTS THE SUN’S ENERGY DURING THE DAY, CAUSING IT TO BECOME WARMER
B. THE SAND ABSORBS THE SUN’S ENERGY DURING THE DAY, CAUSING IT TO BECOME WARMER
20. IF YOU PLACE A HOT STONE IN BEAKER OF COLD WATER, WHAT WOULD HAPPEN TO THE STONE AND
WATER TEMPERATURE AFTER 10 MINUTES? The hot stone will transfer energy and heat to cold water
and they will reach equilibrium temp.
21. ENERGY CAN CHANGE FROM ONE FORM TO ANOTHER TRUE OR FALSE : TRUE
22. WRITE IN ORDER OF DECREASING KINETIC ENERGY: SOLID, LIQUID, GAS
GAS-LIQUID-SOLID
23. IN WHAT DIRECTION DOES THE TRANSFER OF ENERGY FROM HEAT MOVE BETWEEN A HOTTER AND
COLDER OBJECT? FROM HOTTER TO COLDER
24. THE TRANSFER OF ENERGY FROM HEAT IS CALLED HEAT FLOW. (Hint, look at vocab words)
25. THIS VOCABULARY WORD IS REFERRING TO HEAT: THERMAL
26. THE TEMPERATURE TWO OBJECTS REACH WHEN THEY TOUCH: EQUILIBRIUM
27. CHOOSE CORRECT ANSWER: MATERIALS GET WARMER FROM THE ABSORPTION OR REFLECTION OF
LIGHT BECAUSE TRANSFERRED LIGHT EMITS HEAT.
28. CAN KINETIC ENERGY EVER BE BIGGER THAN POTENTIAL ENERGY? WHY?
7
NO, BECAUSE POTENTIAL IS THE STORED ENERGY AND KINETIC IS THE MOTION OF THE POTENTIAL
29. WHERE DOES ELECTRICITY COME FROM? HEAT IS RELEASED FROM BURNING COAL AND STEAM RUNS
THE TURBIN AND ELECTRICAL GENERATOR
30. NAME TWO TYPES OF ENERGY ELECTRICAL ENERGY IS CONVERTED TO? THERMAL AND SOUND
31. HOW IS ENERGY TRANSFERRED FROM THE SUN TO EARTH? THROUGH ELECTROMAGNETIC WAVES
32.
33. Why did the teacher need a pair of heat resistant rubber gloves when I touched the hot beakers during
lab?
a. Rubber is a poor conductor of heat and electricity
b. Rubber is a good conductor of heat and electricity
c. Rubber is a poor conductor of electricity and a good conductor of heat
34. Which one is considered a good insulator of heat?
a. Plastic, because heat is unable to flow through it
b. Glass, because heat is able to flow easily
c. Aluminum, because it allows heat to flow easily
35. A pot is heated on the stove. Why is the metal handle hot?
a. Conduction
b. Convection
c. Radiation
36. What is responsible for the uneven heating in the atmosphere?
a. Conduction
b. Convection
c. Radiation
37. Why can you feel the heat around the campfire even though you don’t touch it
a. Conduction
b. Convection
c. Radiation
38. Why is there a difference in temperature when you are standing in a pool?
a. Conduction
b. Convection
c. Radiation
39. What is the best material for conducting electricity or heat?
a. Wood
b. Metal
c. Stone
8
d. Plastic
40. Why shouldn’t you use a metal fork to remove a piece of toast from a toaster?
It will conduct electricity
41. What is the best material to use in the circuit below to make light glow? Why?
Plastic straw
Cotton string
Aluminum foil-best conductor of electricity
Rubber eraser
42. Circle correct answer: Materials will generally become warmer through the absorption/reflection of
light because light when transferred will emit/absorb heat.
BONUS:
The walls of the cave were warmed through a process of radiation because a light when shined always gives
off heat
43. What does energy transfer mean? Give an example
9
The movement of energy from one place to another
Heat transfer
44. What dos energy transformation mean? Give an example
The change in form of energy. Electrical to light energy
45. Give an example of energy transformation using one of the following types of energy: Chemical,
mechanical, sound, nuclear, thermal
Chemical from food to mechanical
46. What is another name for transformed?
Changed
Converted
47. When energy is transferred or transformed, what happens to the total energy of the system? Stays
same
48. When an electromagnetic waves strike a pipe, what usually happens?
a. The pipe gets cooler
b. The pipe reflects all of the waves
c. The pipe absorbs some of the waves
49. Why are metals used for making pots and pans?
a. Metals conduct heat and have a high melting point
b. Metals conduct heat and have low melting pong
c. Metals radiate heat and have high melting point
50. Why do electric cords come with plastic coating wrapped over the wires?
a. Plastic is a conductor and prevents wires from shocking you
b. Plastic is an insulator and prevents wires from shocking you
c. Plastic makes the wires look neat
51. A student notices that an inflated balloon gets larger when it is warmed up by a lamp. What caused the balloon
to become larger?
a. The heat from lamp caused the particles of the balloon to contract, making it larger
b. The heat from lamp caused the particles of balloon to expand, making it larger
10
11