Forces Topic

Question 0

What is Gravity?

Answer 0

It is a force of attraction.

Question 1

Is Gravity a force of attraction

True or False?

Answer 1

True

Question 2

What are three ways in which a force changes an object .

Answer 2

Push, Pull , Twist.

Question 3

The unit used to measure force is called The ……

Answer 3

The Newton.

Remember symbol N.

Question 4

What do Arrows represent?

Answer 4

Arrows represent the force and the reaction force in a situation.

e.g -the bigger arrow ,the bigger force.

Question 5

What is the definition of Inertia?

Answer 5

It means to resist change in motion.

Eg :if you left your school bag in your room ,it would stay there until something happened to it ,this ability is called Inertia.

Question 6

A force can Be measured using a ……..balance?

Answer 6

A spring balance.

Question 7

All around us things move or are in ……?

Answer 7

Motion.

Question 8

Whenever there is a change in motion, a …… Has acted?

Answer 8

A force.

Question 9

What is the difference between acceleration and deceleration?

Answer 9

Acceleration means speeding up or getting faster.

Deceleration means losing speed or slowing down.

Question 10

Multiple choice
Mass is a measure of
A - Gravity
B- Weight
C -How much friction is needed
D- How much matter a object contains

Answer 10

Mass is a measure of how much matter a object contains

Question 11

How is weight measured?

Answer 11

On a scale.

Question 12

What is the difference between a temporary magnet and a permanent magnet?

Answer 12

One keeps a level of magnetism for a long time( permanent) and the other only keeps its magnetism when in a magnetic field( temporary)

Eg: A fridge door magnet is a permanent magnet
A paper clip is a temporary magnet remember these are a soft magnet.

Question 13

What is lightning?

Answer 13

Lightning is a giant spark of electricity produced by a thunderstorm.

Question 14

How does lightning work?

Hint: rain drops

Answer 14

Water droplets collide causing ion build up, positive charge at top of cloud negative charge at the bottom. Causing a discharge from positive to negative…..lightning bolt

Question 15

What is the definition of Friction?

Answer 15

When two surfaces make contact and can slow objects down.

Question 16

If you want to overcome inertia , you have to apply what?

Answer 16

Force.

Question 17

Multiple choice: Which one of the features in a car is not a safety feature?
A. Electronic Stability Control
B. Seatbelt
C.Steering Wheel
D. Airbags

Answer 17

C. steering Wheel

Other safety’s could be :
Anti lock breaking system
Auto emergency braking
Traction control

Question 18

What is lightning?

A. A Christmas light
B. A planet
C. A giant ring around the sun
D A giant spark of electricity

Answer 18

A giant spark of electricity.

Question 19

What is Inertia?
A - to resist change in motion.
B - to apply force
C - A car safety feature
D- A satellite

Answer 19

To resist change in motion.

Question 20

Multiple choice
Weight is a measure of
A- how strong gravity pulls on a object
B- How strong gravity pulls on mass
C- how strong gravity pulls on a force.
D- How strong gravity is.

Answer 20

A - How strong gravity pulls on an object.

Question 21

Definition of a force

Answer 21

Strength of physical action or movement