Understanding heat and temperature

Question 1

What does temperature of an object tell us?

Answer 1

how hot it is
measured in degrees Celsius
does not tell us how much heat it contains

Question 2

What is heat?

Answer 2

a form of energy

measured in Joules (J)

Question 3

How are heat and temperature linked?

Answer 3

The hotter something is, the more heat energy it has

Question 4

Energy transfer between an object and its surroundings

Answer 4

The difference in temperature between an object and its surroundings affects the rate at which energy is transferred. When the temperature difference is greater, the rate of energy transfer is higher.

Question 5

What is a thermogram?

Answer 5

Image taken by an infrared camera that shows how much infrared radiation is being emitted by a body

Question 6

What colour are the hottest areas on a thermogram?

Answer 6

White

Question 7

What colour are the coldest areas on a thermogram?

Answer 7

Dark Blue

Question 8

What is temperature a measure of?

Answer 8

the average kinetic energy of the particles in a substance

Question 9

What value is ‘absolute zero’?

Answer 9

-273.16 degrees Celsius

Question 10

What is heat a measure of?

Answer 10

energy on an absolute scale