Activate 1 - Chapter P1 - Forces

Question 1

Deform

Answer 1

To change shape

Question 2

Stretch

Answer 2

An object can be stretched if you exert a force on it.

Question 3

Compress

Answer 3

To squash into smaller places

Question 4

Reaction

Answer 4

The support force provided by a solid surface like a floor.

Question 5

Extension

Answer 5

The amount by which an object gets longer when a force is applied.

Question 6

Tension

Answer 6

A stretching force.

Question 7

Elastic limit

Answer 7

The point beyond which a spring will not return to its original length when the force is removed.

Question 8

Hooke’s Law

Answer 8

A law that says that if you double the force on an object the extension will double

Question 9

Magnetic Force

Answer 9

The force between two magnets, or a magnet and a magnetic material.

Question 10

Electrostatic force

Answer 10

The force acting between two charged objects

Question 11

Field

Answer 11

A region where something feels a force.

Question 12

Weight

Answer 12

The force of the earth on an object due to its mass.

Question 13

Mass

Answer 13

The amount of matter (stuff) a thing is made up of.

Question 14

Kilogram

Answer 14

A unit of mass (symbol kg)

Question 15

Balanced

Answer 15

Forces acting on an object that are the same size but act in opposite direction.

Question 16

Equilibrium

Answer 16

Balanced

Question 17

Unbalanced

Answer 17

Opposing forces on an object that are unequal.

Question 18

Driving Force

Answer 18

The force that is pushing or pulling something.

Question 19

Resistive Forces

Answer 19

Any force that acts to slow down a moving object.

Question 20

Push

Answer 20

A type of force

Question 21

Pull

Answer 21

A type of force

Question 22

Contact force

Answer 22

A force that acts when an object is in contact with a surface, air or water.

Question 23

Non-Contact

Answer 23

A magnetic, electrostatic, or gravitational force that acts between objects not in contact.

Question 24

Interaction Pair

Answer 24

When two objects interact there is a force on each one that is the same size but in opposite directions.

Question 25

Newtonmeter

Answer 25

A piece of equipment used to measure weight in newtons.

Question 26

Newton

Answer 26

The unit of force (symbol N)

Question 27

Friction

Answer 27

The force that resists movement because of contact between surfaces.

Question 28

Lubrication

Answer 28

A substance that reduces friction between surfaces when they rub together.

Question 29

Water resistance

Answer 29

The force on an object moving through water that cause it to slow down ( also known as drag )

Question 30

Air resistance

Answer 30

The force on an object moving through the air that causes it to slow down (also known as drag)

Question 31

Drag force

Answer 31

The force acting on an object moving through the air or water that causes it to slow down.

Question 32

Streamlined

Answer 32

Shaped to reduce resistance to motion from air or water.

Question 33

Gravity

Answer 33

A non-contact force that acts between two masses.