Heat and Temperature

Question 1

What is heat also known as

Answer 1

Thermal Energy

Question 2

What is heat?

Answer 2

The speed of the particles in a substance.

Question 3

Examples of how we use heat

Answer 3

Thermostat
oven
stove

Question 4

Who was Lord Kelvin

Answer 4

He created the Kelvin Scale

Question 5

What temperature in celsius is Absolute Zero

Answer 5

-273 Celsuis

Question 6

What is a thermometer

Answer 6

It uses liquid mercury to determine the temperature of a substance.

Question 7

What is a thermocouple

Answer 7

2 wires twisted together and when heat is applied an electronic current is produced.

Question 8

What is a bimetallic strip

Answer 8

2 metals fused together. When heat is applied one expands faster than the other.

Question 9

What is a recording Thermometer

Answer 9

A bimetallic strip attached to a long arm to record the temperature on a piece of paper

Question 10

What is an Infrared Thermogram

Answer 10

When an object is warmer than absolute zero if gives off an infrared radiation that can be seen on a camera.

Question 11

What are the 3 states of matter

Answer 11

Solid
Liquid
Gas

Question 12

4 points of the particle matter

Answer 12

All matter is made up of particles
Particles are always moving
Particles have space between them
When heat is applied particles expand

Question 13

What is the Law of Conservation of Energy

Answer 13

Energy cannot be created nor destroyed. It can only be transformed from one type to another and passed from one object to another.

Question 14

Do particles expand or contract when heated?

Answer 14

expand

Question 15

Do particles expand or contract when cooled?

Answer 15

Contract

Question 16

What is Heat Capacity

Answer 16

the amount of thermal energy that heats or cools the object by 1 degree celsius

Question 17

State all of the changes in states names

Answer 17

 Melting (Fusion)
 Solid to Liquid
 Solidification (Freezing)
 Liquid to Solid
 Evaporation
 Liquid to Gas
 Condensation
 Gas to Liquid
 Sublimation
 Solid to Gas
 Deposition
 Gas to Solid

Question 18

3 ways of transferring energy

Answer 18

Convection
Conduction
Radiation

Question 19

What is Radiation

Answer 19

transfer of energy without any movement of matter

Question 20

What is Conduction?

Answer 20

Only occurs in Solids

heat transferred by direct collision of particles

Question 21

What is Convection?

Answer 21

Only occurs in liquids and gasses
When a particle is heated up it rises and pushes the colder particles down since they are cooled and the cycle continues.

Question 22

What is Chemical energy

Answer 22

energy that is released through chemical reactions

Question 23

What is electrical energy?

Answer 23

energy produced by hydroelectric dams

Question 24

What is mechanical energy

Answer 24

energy released by pushing or pulling

Question 25

What is geothermal energy?

Answer 25

Energy from the inside of the Earths core

Question 26

What is solar energy?

Answer 26

Energy produced from the sun using solar panels

Question 27

What is wind energy?

Answer 27

Energy produced from wind by wind turbines.

Question 28

What is Nuclear Energy

Answer 28

energy produced by splitting chemical bonds.

Question 29

What are 3 problems with fossil fuels?

Answer 29

Non non-renewable
produces carbon dioxide when burned
contributes to the green house effect

Question 30

What are refrigerants?

Answer 30

Liquids that evaporate easily at low temperatures and remove thermal energy from foods.

Question 31

What are some dangers with Thermal Energy

Answer 31

Burns, Fire hazards, chemicals in soil