Introducton To Energy

Question 1

In science, what is energy?

Answer 1

The ability to cause change

Question 2

What are the 2 general types of energy?

Answer 2

Kinetic and Potential Energy

Question 3

What is kinetic energy?

Answer 3

The energy of an object due to motion

Question 4

What does the amount of KE an object has depend on?

Answer 4

Mass and Speed

Question 5

KE increases as ________ increases

Answer 5

Mass

Question 6

KE increases as _________ increases

Answer 6

Speed

Question 7

If a bowling ball and soccer ball roll on the floor at the same speed which has more KE and why?

Answer 7

Bowling ball; bcuz it has more mass

Question 8

If a bowling ball and soccer ball roll on the floor and have the same mass with different speeds, which has more KE and why?

Answer 8

The one with more speed

Question 9

What’s potential energy?

Answer 9

The energy and object has due to its position, condition, or chemical composition

Question 10

What is GPE?

Answer 10

PE that is the result of an object’s position

Question 11

Can change in condition affect PE?

Answer 11

YES OFC DA

Question 12

Chemical PE depends on?

Answer 12

Chemical composition

Question 13

As bonds break and new bonds between atoms form during a chemical change, energy can be _________

Answer 13

Released

Question 14

Can an object have PE and KE at the same time?

Answer 14

Yass ofc

Question 15

What are some common forms of energy?

Answer 15

Mechanical, sound, electromagnetic, electrical, chemical, thermal, and nuclear

Question 16

Energy is expressed in

Answer 16

JOULES

Question 17

What is mechanical energy the sum of?

Answer 17

The sum of an objects KE and PE.

Question 18

Mechanical energy is the energy of?

Answer 18

Motion and Position

Question 19

An objects mechanical energy can be all ___, all _____, or a combination of both

Answer 19

KE;PE

Question 20

What is Sound energy?

Answer 20

Sound energy is kinetic energy caused by the vibration of particles in a medium such as steel, water, or air.

Question 21

As the particles vibrate, they transfer the sound energy to other ___________.

Answer 21

Particles

Question 22

Why do we hear sound?

Answer 22

Bcuz of special structures in our ears detect the vibrations of the particles in the air.

Question 23

How is electromagnetic energy transmitted?

Answer 23

Thru space in the form of electromagnetic waves

Question 24

What causes electromagnetic waves?

Answer 24

By the vibrations of electrically charged particles

Question 25

Give me examples of electromagnetic waves

Answer 25

Visible light, x-rays, and microwaves

Question 26

What does electrical energy result from?

Answer 26

The position or motion of the charged particles.

Question 27

The electricity that powers the lights overhead, is associated with?

Answer 27

Negatively charged particles moving in a wire. (The wire also has positively charged particles that don’t move)

Question 28

Chemical energy is a form of ________ energy

Answer 28

PE

Question 29

The amount of chemical energy in a molecule depends on ………………………………………

Answer 29

The kinds of atoms and their arrangements

Question 30

What are some sources of chemical energy?

Answer 30

Foods we eat, batteries, matches

Question 31

What is TE?

Answer 31

The KE of the particles in an object

Question 32

Particles move _____ at a higher temperature than at lower temperatures

Answer 32

Faster

Question 33

The _______ the molecules in an object move, the more ________________________ the object has.

Answer 33

Faster; TE

Question 34

The more particles an object has the more ____________________ it has.

Answer 34

TE

Question 35

What is the source of nuclear energy?

Answer 35

The nucleus of an atom

Question 36

When does energy transformation take place?

Answer 36

When energy changes from one from to another

Question 37

Can all energy only change into one type of energy?

Answer 37

No; Any form of energy can change into any other form of energy

Question 38

What is a closed system?

Answer 38

A group of objects that transfers energy only to one another

Question 39

What does the law of conservation of energy state?

Answer 39

Energy cannot be created or destroyed only change forms