AnswersACHS-KS-Physical Science B-CRTemperature and Thermal Energy

Heat Answers

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Which refers to the amount of heat required to change the temperature of 1 gram of a substance by 1°C and is related to the chemical composition of the substance?

A
Thermal energy
B
Specific heat
C
Activation heat
D
Boiling point
2
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This chart lists four examples of two objects that are in contact.Which statement accurately describes the flow of heat in each example?

Question illustration
A
Heat will flow from Object 1 to Object 2 in examples 2 and 4, and heat will flow from Object 2 to Object 1 in examples 1 and 3.
B
Heat will flow from Object 1 to Object 2 in examples 1 and 3, and heat will flow from Object 2 to Object 1 in examples 2 and 4.
C
Heat will flow from Object 1 to Object 2 in Example 3, and heat will flow from Object 2 to Object 1 in examples 1, 2, and 4.
D
Heat will flow from Object 1 to Object 2 in examples 1, 2, and 4, and heat will flow from Object 2 to Object 1 in Example 3.
3

Ixchelt burns her tongue when she takes a sip of hot coffee from her mug. Which part of this example represents heat?

A
the thermal energy moving from the coffee to her tongue
B
the thermal energy moving from her tongue to the coffee
C
her coffee
D
her tongue
4

A burner on a stove produces

A
temperature.
B
thermal energy.
C
hotness.
D
fire energy.
5

Isaac wants to make s'mores. He holds a marshmallow on a metal skewer over a fire. A few seconds later, the marshmallow is cooked and the skewer feels warm. What most likely happened?

A
The fire heated the surrounding air, which cooked the marshmallow.
B
The heat generated from the marshmallow flowed in the form of thermal energy to the skewer and fire.
C
The heat from the skewer cooked the marshmallow.
D
Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.
6

Which best explains why water boils in a pot sitting over fire?

A
Heat energy is created from the thermal energy in the air.
B
Heat energy is transferred from the water to the fire.
C
Thermal energy from the fire moves to the water in the form of heat.
D
Thermal energy from the surrounding air moves to the water.
7

The metal aluminum coils in an air conditioner conduct thermal energy from inside the house and release it outside the house. What can be said about the coils when they are accepting the heat inside the house?

A
They must be warmer than the air inside the house.
B
They must be cooler than the air inside the house.
C
They must have more thermal energy than the air inside the house.
D
They must be more insulated than the air inside the house.
8

Shelly tells a friend that her computer needs to be fixed because it has been producing a lot of heat and is smoking. Where is the error in her statement?

A
Heat cannot be described as having been produced.
B
Thermal energy cannot be produced by electronics.
C
Her computer should be producing a lot of heat and does not need to be fixed.
D
Her computer is producing thermal energy, not heat.
9

Which factors affect heat transfer between a warm and a cool substance?

A
the time it took to heat the substance, the area of contact, and the specific heats of the substances
B
the amount of time of contact, the area of contact, and the specific heats of the substances
C
the time it took to heat the substance, the area of the substances, and the specific heats of the substances
D
the amount of time of contact, the area of the substances, and the specific heats of the substances
10

Which best describes the direction of heat?

A
from a substance with no thermal energy to a substance with high amounts of thermal energy
B
from a substance with less thermal energy to a substance with more thermal energy
C
from a cooler substance to a warmer substance
D
from a warmer substance to a cooler substance

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