Chapter 8 - Forces

Question 1

Atoms

Answer 1

A very small particle that makes up all things. Atoms have the same properties as the objects they make up.

Question 2

Negatively charged

Answer 2

Any particle or substance that has more electrons than protons.

Question 3

Positively charged

Answer 3

Any particle or substance that has more protons than electrons

Question 4

Protons

Answer 4

Tiny, but heavy, particle found in the nucleus of an atom. Protons have a positive electrical charge

Question 5

Neutrons

Answer 5

Tiny , but heavy, particles found in the nucleus of an atom. Neutrons have no electrical charge.

Question 6

Electrons

Answer 6

Very light, negatively charged particles inside an atom. Electrons move around the central nucleus of an atom.

Question 7

Insulators

Answer 7

Insulators materials that do not allow electric charge to flow through them.

Question 8

Conductors

Answer 8

Materials that allow electric charge to flow through them.

Question 9

Nucleus

Answer 9

Roundish structure inside cells that acts as the control centre for the cell.

Question 10

Neutral

Answer 10

Having the same number of electrons and protons.

Question 11

Static electricity

Answer 11

A build up of charge in one place.

Question 12

Friction

Answer 12

Friction is the force applied to the surface of an object when it moves against the surface of another object.

Question 13

Lubricant

Answer 13

A slippery substance to make things easier to move if there is a lot of friction on that surface.

Question 14

Traction

Answer 14

A type of friction to assist movement.