Chapter 13

Question 0

The ability to do work and the ability to cause change

Answer 0

Energy

Question 1

A force causes an object to move through distance

Answer 1

Work

Question 2

What is the energy unit

Answer 2

Joules

Question 3

The rate at which work is done
The rate at which energy is transferred
The amount of energy transferred in a unit of time

Answer 3

Power

Question 4

What is the formula for power

Answer 4

Energy transferred divided by time

Question 5

What is power in terms of energy

Answer 5

The rate of the transfer of energy is power

Question 6

What are the two basic kinds of energy

Answer 6

Kinetic and potential

Question 7

The energy that an object has due to its motion

Answer 7

Kinetic

Question 8

What factors affect kinetic energy

Answer 8

The mass of the moving object and the velocity of a moving object

Question 9

What is the kinetic energy formula

Answer 9

Kinetic energy=1/2 x mass x velocity2

Kinetic energy=0.5 x mass x velocity2

Question 10

Which has a greater effect on an objects kinetic energy doubling its mass or doubling its velocity

Answer 10

Velocity has more of the effect because it is squared

Question 11

Stored energy that results from the position or shape of an object

Answer 11

Potential energy

Question 12

What is gravitational potential energy and it’s formula

Answer 12

The potential energy that is related to an objects height
GPE equals wait times height
GPE equals newtons times meters
GPE equals N-m or 1J

Question 13

What is elastic potential energy and give examples

Answer 13

The potential energy associated with objects that can be stretched or compressed
And archer pulling back the arrow and releasing to it’s target

Question 14

What is the unit of mass

Answer 14

Kg

Question 15

What is the unit of height

Answer 15

M

Question 16

What is the unit of distance

Answer 16

M

Question 17

What is the unit of weight

Answer 17

N

Question 18

What is the unit of work

Answer 18

J

Question 19

What is the name of GPE

Answer 19

J

Question 20

What is the unit of KE

Answer 20

J

Question 21

The form of energy associated with the position of an object

Answer 21

Mechanical energy

Question 22

What is mechanical energy’s formula

Answer 22

Potential energy plus kinetic energy equals ME

Question 23

Name the forms of energy

Answer 23

Thermal energy electrical energy chemical energy nuclear energy electromagnetic energy

Question 24

Also called heat potential and kinetic energy of the particles in an object

Answer 24

Thermal energy

Question 25

Give an example of thermal energy

Answer 25

Lava and melting ice cream

Question 26

The energy of electric charges depending on whether the charges are moving or stored blank can be a form of kinetic energy or potential energy

Answer 26

Electrical energy

Question 27

Give an example of electrical energy

Answer 27

Lightning

Question 28

Potential energy stored in the chemical bonds that hold chemical compounds together

Answer 28

Chemical energy

Question 29

Give an example of chemical energy

Answer 29

Store in the fossil fuels oil coal etc. and the food you eat | When bonds in a chemical compounds break new chemical compounds may form

Question 30

Stored in the nucleus of an atom released during a nuclear reaction

Answer 30

Nuclear energy

Question 31

Give an example of nuclear energy

Answer 31

Nuclear fission occurs when a nucleus splits | Nuclear fusion combining of small nuclei hydrogen to produce a larger nucleus helium

Question 32

Travels in waves has some electrical properties and some magnetic properties

Answer 32

Electromagnetic energy

Question 33

Give examples of Electromagnetic energy

Answer 33

Radio microwaves infrared visible light ultraviolet x-rays gamma

Question 34

The change of one form of energy into another

Answer 34

Energy transformations

Question 35

How are different forms of energy related

Answer 35

Energy can change from one form to another

Question 36

Energy transformation in juggling

Answer 36

From potential to Kinetic and from kinetic to potential

Question 37

Energy transformation in a pendulum

Answer 37

From potential to kinetic and from kinetic to potential

Question 38

Energy transformation and a pole vault

Answer 38

Kinetic energy to elastic potential energy to gravitational potential energy to kinetic energy

Question 39

What is the law of conservation of energy

Answer 39

When one form of energy is transformed to another no energy is destroyed in the process energy cannot be created nor destroyed energy is conserved

Question 40

What affect does friction have on the transfer of energy

Answer 40

Friction causes some of an objects kinetic energy to be transformed into thermal energy if the object is moving its mechanical energy is transformed into thermal energy

Question 41

Einstein's theory of the relationship between matter and energy

Answer 41

Matter can be transformed into energy A small amount of matter is destroyed to release a huge amount of energy Matter and energy together are conserved E equals MC2

Question 42

What are fossil fuels

Answer 42

Fuel a material that is composed of stored potential energy Fuels formed from the decayed the bodies of plants and animals millions of years ago Coal petroleum natural gas

Question 43

What is the source of energy from fossil fuels

Answer 43

Sun

Question 44

What type of energy is released when fossil fuels burn

Answer 44

Chemical energy (potential) stored millions of years ago

Question 45

What is combustion

Answer 45

The process of burning fuel rapidly combined oxygen with the fuel Chemical potential energy is transformed into thermal energy