Astronomy

Question 1

What is the difference between the geocentric and heliocentric theory?

Answer 1

The geocentric theory was that the Earth was the centre of the universe and the sun is revolving around us. The heliocentric theory was that the Sun was the centre of the universe and the Earth is revolving around the Sun.

Question 2

What are the 4 laws Isaac Newton made?

Answer 2

• An object will not move or change course unless acted on by a force.
• An amount of force is dependent on mass and acceleration.
• For an action, there is an equal and opposite reaction.
• The closer the object the stronger the force, further away weaker the force.

Question 3

What are the 3 laws Johannes Kepler made?

Answer 3

• Planets orbit the sun in ellipses
• The closer the object to the sun the faster it orbits
• The further away the object is to the sun the slower it is.