Chapter 8 - Force

Question 1

Push Force

Answer 1

Is the force when we move forward and move something away from us.

Question 2

Pull Force

Answer 2

The force when you move an object towards you.

Question 3

Twist Force

Answer 3

The force when you move an object left or right.

Question 4

Contact Force

Answer 4

Is the force when one object comes in contact with another object.

Question 5

Non Contact Force

Answer 5

Is when the objects require no effort and move without touching them.

Question 6

Gravity

Answer 6

Is a force which pulls everything down to the ground, without touching any objects. It is a non contact force.

Question 7

Force

Answer 7

Force is the gravity that pulls, pushes or even twists. It is measured in newtons.

Question 8

Permanent Magnets

Answer 8

Are magnets that retain their magnetism when removed from other magnets.

Question 9

Temporary Magnets

Answer 9

Are magnets that lose their magnetism when removed from another magnet.

Question 10

Magnet

Answer 10

Magnets attract certain materials without physical force. They are non contact forces.

Question 11

Repulsion

Answer 11

An opposing force that fights each other.

Question 12

Attraction

Answer 12

A force that pulls another object closer together.

Question 13

Magnetic Fields

Answer 13

Magnetic Fields is the area where the magnetic force acts.

Question 14

Domains

Answer 14

Are mini magnets that are inside every object. If they are in order, they magnetise the object, but if they are scrambled, they don’t magnetise the object.

Question 15

Electro Magnet

Answer 15

An electromagnet is a piece of non magnetised iron with insulated wire around it that magnetises and arranges the domains within the iron.

Question 16

Mass

Answer 16

Is the size of the planet + everything on the planet. The bigger the mass, the more gravity.

Question 17

Weight

Answer 17

The measurement of the mass’s gravitational pull and it is measured in newtons.

Question 18

Newton

Answer 18

The measure of force.

Question 19

Air Resistance

Answer 19

The force pushing against falling objects.

Question 20

Terminal Speed

Answer 20

The speed reached when the air resistance and the force of gravity are balanced, so the falling object cannot go any faster.

Question 21

Atoms

Answer 21

Are very small particles that make up all things.

Question 22

Nucleus

Answer 22

The roundish structure made up of protons and neutrons that acts as the control centre.

Question 23

Electrons

Answer 23

Very light, negative charged particles that move around the nucleus.

Question 24

Negative Electric Charge

Answer 24

The negative charge of an atom that has more electrons than protons.

Question 25

Protons

Answer 25

Tiny, but heavy particles that make up part of the nucleus. They have a positive electrical charge.

Question 26

Positive Electric Charge

Answer 26

The charge of an atom when there are more protons than electrons.

Question 27

Neutrons

Answer 27

Tony, but heavy particles that also make up the nucleus. They have no electric charge.

Question 28

Neutral

Answer 28

The same number of protons and electrons. The atom has no electric charge.

Question 29

Static Electricity

Answer 29

The build up of electricity in one object.

Question 30

Insulators

Answer 30

Materials that don’t allow electric charge to flow through them.

Question 31

Conductors

Answer 31

Materials that allow electric charge to flow through them.

Question 32

Friction

Answer 32

Is the force applied when the surface of an object moves against another surface of the object.

Question 33

Traction

Answer 33

A type of friction that assists the movement of an object.

Question 34

Lubricants

Answer 34

Substances with large particles that make two objects against each other last longer and have more movement.

Question 35

Fluid

Answer 35

Substances that have no shape or form. Examples are Gas and Liquids.

Question 36

Streamlined

Answer 36

Shaped so fluid is minimised to the minimum.

Question 37

Alloys

Answer 37

A mixture of metals and non metals.

Question 38

Alloys

Answer 38

A mixture of metals and non metals.

Question 39

Buoyancy

Answer 39

Is the force that pushes the weight of an object on a fluid up.

Question 40

Surface Tension

Answer 40

When water particles are holding together, they keep the shape, but if you add soap or detergent, the particles will let go and make a different shape.