Force, Motion, and Energy

Question 0

Define weight.

Answer 0

The measure of the force of gravity on an object

Question 1

Define motion.

Answer 1

Any change of position

Question 2

Define force.

Answer 2

A push or pull

Question 3

Define position.

Answer 3

A certain place, described in comparison with another place

Question 4

Define acceleration.

Answer 4

A change in speed or direction of an object’s motion

Question 5

Define friction.

Answer 5

The force that keeps objects that are touching each other from sliding past each other easily

Question 6

Define frame of reference.

Answer 6

All the things around you that you can sense and use to describe motion

Question 7

Define newton (not the person).

Answer 7

The metric unit of force

Question 8

Define speed.

Answer 8

A measure of an object’s change in position during a unit of time

Question 9

Define relative motion.

Answer 9

Motion described in relation to a frame of reference

Question 10

Define gravity.

Answer 10

A force that pulls objects toward each other

Question 11

What pulls any two objects toward each other?

Answer 11

Gravity

Question 12

What occurs when two objects slide past each other?

Answer 12

Friction

Question 13

What is caused by an unbalanced force on an object?

Answer 13

Acceleration

Question 14

What does NOT change when there is no force on a moving object?

Answer 14

Its speed

Question 15

What causes a spring scale to move?

Answer 15

Weight

Question 16

What would you call a change in an object’s position?

Answer 16

Motion

Question 17

Name the TWO states of energy.

Answer 17

Kinetic and potential

Question 18

What term describes how fast an object is moving?

Answer 18

Speed

Question 19

In what FOUR ways can force influence motion?

Answer 19

It can cause an object to:

1. Move
2. Stop
3. Change speed
4. Change direction

Question 20

How many of the five examples of “good” friction can you name?

Answer 20

1. Waxed surface when bowling
2. Lead on paper
3. Friction of your finger on a touch screen
4. Brakes on bikes (especially on Quantico Street!)
5. Friction in sports to help change position, stop, and pivot

Question 21

How many of the five examples of “bad” friction can you name?

Answer 21

1. A heavy object that you need to roll
2. Scrapes, burns, or other injuries
3. Sports injuries
4. Earthquakes
5. Pool foot

Question 22

Name the TWO things that influence friction.

Answer 22

1. What the surfaces are made of

2. How are the two surfaces are

Question 23

How can you describe an object’s motion?

Answer 23

By tracing and measuring its position over time relative to a frame of reference.

Question 24

Why is Sir Isaac Newton important to the field of physics?

Answer 24

He changed to worldview from Aristotle’s four elements to the Three Laws of Motion. These laws were the first to describe the movement of objects in terms of forces.

Question 25

Name the First Law of Motion.

Answer 25

A stationary object will not move if all forces acting on it are balanced.

(TECHNICALLY: Objects in motion tend to stay in motion. Objects at rest tend to stay at rest.)

Question 26

Name the Second Law of Motion.

Answer 26

Force = Mass x Acceleration

Question 27

Name the Third Law of Motion.

Answer 27

Every action has a reaction in the opposite direction.

TECHNICALLY: Every action yields an EQUAL and OPPOSITE reaction.