The Earth, The Sun, The Moon And The Sky

Question 1

Why do we have day and night?

Answer 1

Th Earth rotates on its axis. It takes the Earth 24 hours to complete a full turn. When the part of the Earth that we are on is facing the sun, it is day time. But when it is facing away (towards the moon) it is night time.

Question 2

Why does our year have 365 days?

Answer 2

The Earth takes 365 days to make a complete orbit. The orbit is elliptical

Question 3

What is an orbit?

Answer 3

The regularly repeated path that an object takes around another object.

Question 4

What keeps an object in space in orbits?

Answer 4

The attractive force of gravity

Question 5

What keeps object in space in orbits?

Answer 5

The attractive force of gravity

Question 6

Forces can change……

Answer 6

1. the shape of something
2. its speed
3. the direction it’s moving in

Question 7

What is a force measured in?

Answer 7

Force is measured in newtons/N. You would use a newton meter to measure it.

Question 8

8 Types of forces

Answer 8

1. Weight
2. Friction
3. Drag
4. Upthrust
5. Tension
6. Elastic force
7. Contact force
8. Magnetic force

Question 9

What is streamlining?

Answer 9

Giving an object an aerodynamic shape to reduce force of friction or air resistance.

Question 10

Why are streamlined cars better for the environment?

Answer 10

They produce less air resistance so that it decreases their fuel consumption.