Gravity

(a)   is how much gravity affects a thing.

A pulling force.

• gravity

• artificial

  satellites

12. Why is it necessary for the satellite to travel at over

37600km/h when it leaves the surface of he Earth?

(a)  

When the satellite travels at 27200km/h, what path does it follow?

(a)  

14. What force keeps the satellite following this path?

(a)  

What happens to the satellite if its speed drops below 27200km/h?

(a)  

What is the force that keeps planets in orbit around the sun?

• Gravity

• Magnetism

• Electricity

• Friction

Which of the following is a result of Earth's gravitational pull?

• Tides

• Volcanic eruptions

• Earthquakes

• Wind

Who formulated the law of universal gravitation?

• Isaac Newton

• Albert Einstein

• Galileo Galilei

• Nikola Tesla

What happens to your weight if you travel to a planet with stronger gravity than Earth?

• It increases

• It decreases

• It stays the same

• It disappears