Why are two panes of glass used in the window shown below?

Air is a good insulator, the air helps prevent heat transfer.

3. Which statement describes the direction of heat flow?

Heat flows from a warmer object to a cooler object

1. Which statement is true about the pies?

D has twice the thermal energy as A

2. What does a thermometer measure?

the average kinetic energy of the particles of an object

14. When telephone lines are hung, why do they sag?

Lines contract when they cool. They need slack so they don't snap.

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Ch. 8 Thermal Energy and Heat Lesson 3 and Standardized Test Prep

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1
12. To know the amount of heat needed to raise the temp of 2kg of copper by 10*C. What property do you need to know?
the temperature of the copper
the thermal energy of the copper
the specific heat of copper
the melting point of copper
2
4. The specific heat of iron is 450 J/(kg×K). How much thermal energy must be transferred to 15 kg of iron to raise 4.0K
5,400 J
450 J
27,000 J
2,700 J
3
Why are two panes of glass used in the window shown below?
Air is a good insulator, the air helps prevent heat transfer.
Air is a good insulator, the air helps heat transfer occur faster.
Air is a good conductor, the air helps prevent heat transfer.
Air is a good conductor, the air helps heat transfer occur faster.
4
3. Which statement describes the direction of heat flow?
Heat flows from a warmer object to a cooler object
Thermal energy can only be absorbed by cool objects
Heat flows between two objects at the same temperature?
Heat flows from a cooler object to a warmer object
5
5. WHich of the following can be classifid as a good conductor of thermal energy?
silver
wool
air
wood
6
1. Which statement is true about the pies?
D has twice the thermal energy as A
B has twice the thermal energy as C
A and D have the same thermal energy
C and D have the same thermal energy
7
2. What does a thermometer measure?
the average kinetic energy of the particles of an object
the specific heat of an object
the amount of thermal energy in an object
the movement of heat from one object to another
8
13. Wool is a good insulator, which means ____.
it transfers heat well.
Heat is transferred through fluids that rise rise and sink
Heat transfers using electromagnetic waves
it does not transfer heat well
9
14. When telephone lines are hung, why do they sag?
Lines expand when they cool. They need slack so they don't snap.
Lines contract when they heat. They need slack so they don't sag too much
Lines contract when they cool. They need slack so they don't snap.
Lines expand when they heat. They need slack so they don't sag too much

Ch. 8 Thermal Energy and Heat Lesson 3 and Standardized Test Prep Flashcards | StudBud