Energy

Question 1

What is energy?

Answer 1

The ability to do work, to move or cause change in matter

Question 2

What are the two types of energy?

Answer 2

Kinetic and potential

Question 3

What is unit is energy measured in?

Answer 3

Joules

Question 4

What is the equation for energy?

Answer 4

Work = Force x Distance

Question 5

What is potential energy?

Answer 5

Stored energy in an object dure to position

Question 6

What determines the measure of potential energy?

Answer 6

Height and mass

Question 7

The ___________ an object, the greater its potential energy

Answer 7

Higher

Question 8

The amount of _________ stored is related to the amount of stretch applied

Answer 8

Energy

Question 9

What is kinetic energy?

Answer 9

The energy formed or caused by motion

Question 10

What determines the measure of kinetic energy?

Answer 10

Speed/velocity and mass

Question 11

The ____________ an object moves, the greater it’s kinetic energy

Answer 11

Faster

Question 12

What is the law of conservation of energy?

Answer 12

Energy can’t be created or destroyed. It doesn’t disappear, it is just transformed from one form to another.

Question 13

What are the forms of potential energy?

Answer 13

Mechanical, chemical, nuclear and electrical

Question 14

What are the forms of kinetic energy?

Answer 14

Mechanical, radiant, electrical, thermal and sound

Question 15

What is kinetic mechanical energy?

Answer 15

The energy a body possessed because of its motion caused by gravity or elasticity

Question 16

What is potential mechanical energy?

Answer 16

The energy a body possessed because of its position

Question 17

What is thermal energy?

Answer 17

Heat energy

The movement of particles that are constantly in motion

Question 18

What is radiant energy?

Answer 18

Solar or light waves. Energy caused by the movement of electromagnetic waves

Question 19

What is sound energy?

Answer 19

Energy in the form of wave motion (vibrating matter)

Question 20

What is kinetic electrical energy?

Answer 20

Moving electrons from one point to another in a conductor

Question 21

What is potential electrical energy?

Answer 21

Stored electrons not moving

Question 22

What is chemical energy?

Answer 22

Energy stored in chemical substances or combounds

Question 23

What is nuclear energy?

Answer 23

Atomic energy. The energy stored in the nucleus of an atom

Question 24

What is the crest?

Answer 24

Highest point on a wave

Question 25

What is the trough?

Answer 25

Lowest point on a wave

Question 26

Do waves have more energy when they have shorter lengths or longer lengths?

Answer 26

Shorter wave lengths

Question 27

What’s a physical change?

Answer 27

The substance looks different, but its nature hasn’t been changed. No new substances are formed

Question 28

What are the 3 types of physical changes?

Answer 28

Phase Change, dissolution and deformation

Question 29

What happens when energy is added to a gas, liquid or solid?

Answer 29

The particles do not change, just the force of attraction between them

Question 30

What happens when energy is added to a liquid?

Answer 30

When you heat a liquid, you add energy. The particles absorb this energy, which makes them move faster and faster, changing the force of attraction between them

Question 31

What’s dissolution?

Answer 31

Dissolving a solute and solvent to make a solution by storing them to combine

Question 32

What happens with energy in dissolution?

Answer 32

some substances either release energy (exothermic reaction)or absorb energy (endothermic reaction)

Question 33

What’s deformation?

Answer 33

Changing the shape

Question 34

What happens when two or more substances react in a chemical change?

Answer 34

They make something new (product)

Question 35

What are th 4 indicators of a chemical change?

Answer 35

1) change in colour 2) formation of gas 3) formation of a precipitate 4) generation of light

Question 36

Where does cellular respiration in the body occur?

Answer 36

Mitochondria

Question 37

What does the mitochondria take in during cellular respiration and what does it release?

Answer 37

It takes in glucose and oxygen | It releases CO2, water and energy