Pretest

Question 1

Which direction does heat flow from?

Revolt · Accepted Answer

hot to cold

Question 2

Which substance has the most thermal energy and will have the most heat flow from it?

Revolt · Accepted Answer

a nuclear reactor core open paren 1000 times degree C close paren

Question 3

Heat is most closely related to which kind of energy?

Revolt · Accepted Answer

thermal

Question 4

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

Revolt · Accepted Answer

the thermal energy moving from the coffee to her tongue

Question 5

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?

Revolt · Accepted Answer

Her computer is producing thermal energy, not heat.

Question 6

If a cup of coffee is at 90 times degree C and a person with a body temperature of 36 times degree C touches it, how will heat flow between them?

Revolt · Accepted Answer

from the cup to the hand

Question 7

Which best describes the direction of heat?

Revolt · Accepted Answer

from a warmer substance to a cooler substance

Question 8

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?

Revolt · Accepted Answer

Thermal energy in the form of heat moved from the fire to the skewer and marshmallow.

Question 9

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

Revolt · Accepted Answer

Thermal energy from the fire moves to the water in the form of heat.

Question 10

A burner on a stove produces

Revolt · Accepted Answer

thermal energy.

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