heat

Question 1

Expansion

Answer 1

occurs when solid particles are heated as they occupy more space.

Question 2

Contraction

Answer 2

occurs when solids are cooler as particles occupy less space.

Question 3

Potential energy

Answer 3

the energy that is stored within an object. Objects that are not in motion possess potential energy.

Question 4

Temperature

Answer 4

a measure of the average kinetic energy of the

particles with in a object.

Question 5

Heat

Answer 5

the energy transferred between two objects at different temperatures.

Question 6

law of conservation

Answer 6

energy cannot be created or destroyed, it can only change forms.

Question 7

Thermal energy

Answer 7

the energy possessed by an object or system due

to the movement of particles within.

Question 8

heat transfer

Answer 8

heat transfer is the contact of hot and cold objects. this happens because the hot particles transfer their energy into the cold particles.

Question 9

three examples of heat transfer

Answer 9

convection, conduction and radiation.

Question 10

conduction

Answer 10

Conduction is the most common form of heat transfer and occurs via physical contact. this happens because of the the vibrating particles touching each other.

Question 11

Convection

Answer 11

When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along.

Question 12

why convection happens

Answer 12

this is because the hot particles create more kinetic energy therefore the cold dense particles sink.

Question 13

insulation

Answer 13

warmer objects lose heat to surroundings and cold objects gain temperature to reach room temp.

Question 14

radiation

Answer 14

Radiation travels through the atmosphere via electromagnetic waves. The hotter the object, the more heat it radiates.