Chapter 8- Forces

Question 1

Contact Force

Answer 1

When one object comes in contact with another object

Question 2

No contact force

Answer 2

The motion and shape of objects can be changed without touching them with anything

Question 3

Gravity

Answer 3

The force of gravity pulls down

Question 4

Force

Answer 4

A force is a push or pull in a particular direction 3 examples:
Opening a door
Opening a pencil case
Pushing a button.

Question 5

Permanent Magnets

Answer 5

Magnets that retain their magnetism when removed

Question 6

Domains

Answer 6

Domains are tiny compartments that are within an object, Magnetised objects are organised, non magnetised is when objects are jumbled up and unorganised.

Question 7

Electromagnet

Answer 7

An electromagnet is a coil of wire wrapped around an iron coil

Question 8

Mass

Answer 8

A measure of the amount of material in an object of substance

Question 9

Weight

Answer 9

A measure of the size of the gravity force pulling an object towards the centre of a massive body

Question 10

Buoyancy

Answer 10

A force which keeps objects floating

Question 11

Surface Tension

Answer 11

The firmness of a surface of a liquid