Physical Science

Question 1

Radiation

Answer 1

The emission of energy as EM waves.

Question 2

Convection

Answer 2

The movement caused within a fluid by of hot material to rise and cold to sink due to gravity.

Question 3

Conduction

Answer 3

The process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature.

Question 4

Physical properties

Answer 4

Any property that is measurable and whose value describes a state of the physical system.

Question 5

Physical change

Answer 5

This is a change that occurs when objects undergo a change that does not change their chemical composition.

Question 6

Chemical properties

Answer 6

A property of a material that become evident during or after a chemical reaction.

Question 7

Speed

Answer 7

The rate at which someone or thing is able to move.

Question 8

Velocity

Answer 8

The speed of something in a given direction.

Question 9

Force

Answer 9

The energy as an attribute of physical action.

Question 10

Friction

Answer 10

The resistance that one surface or object encounters when moving over another.

Question 11

Newtons 1 law

Answer 11

The law of inertia: an object in motion stays in motion and an object at rest stays at rest.

Question 12

Newtons 2 law

Answer 12

The acceleration of an object is directly proportional to the magnitude of the force.

Question 13

Newtons 3 law

Answer 13

For every action there is an equal and opposite reaction.