Forces

Question 1

What is a contact force?

Answer 1

A forces in which objects touch

Question 2

What is friction force?

Answer 2

A force that acts against objects {stops} sliding past one another

Question 3

What is tension force?

Answer 3

Pulling forces

Question 4

What is compression force?

Answer 4

Pushing forces

Question 5

Field Forces/Non contact forces

Answer 5

Forces between objects that do not touch

Question 6

What is the force of gravity?

Answer 6

A non-contact force that pulls objects towards the centre of the earth.

Question 7

What do we call the force that pulls objects?

Answer 7

Force of attraction

Question 8

What is an orbit?

Answer 8

The pathway around a planet or other body in space.

Question 9

What is a force field?

Answer 9

The region where field forces can be felt.

Question 10

What is weight?

Answer 10

A measure of the gravitational force exerted on a material (measured in Newtons)

Question 11

What is mass?

Answer 11

A measure of how much material is in an object (measured in kilograms). The mass of an object does not change no matter where it is measured.

Question 12

How do you measure weight?

Answer 12

By multiplying the mass by the acceleration due to gravity (10m/s²)
eg. F=mg
F= 5kg x 10m/s² = 50N

Question 13

What are Magnetic poles?

Answer 13

The ends of a magnet where the pull is strongest.

Question 14

What are magnetic fields?

Answer 14

The space in which the magnet can be felt. Magnets exert a force on magnetic substances containing steel, cobalt and nickel. Field lines show the direction of magnetic fields.

Question 15

What is repulsive force?

Answer 15

A force that pushes objects apart

Question 16

What is electrostatic force?

Answer 16

Friction forces between certain materials that transfer electrons. Only electrons can be transferred to an atom or lost from one. A material that gains electrons becomes negatively charged. A material which loses electrons becomes positively charged.

Question 17

How is potential energy obtained?

Answer 17

It comes from the energy used to create the frictional force by rubbing objects together.

Question 18

What is an electrochemical cell?

Answer 18

A device that can generate electrical energy from the chemical reactions occurring in it, or use the electrical energy supplied to it to facilitate chemical reactions in it.