Orbital Motion

Question 1

What do solar systems consist of?

Answer 1

A sun
Planets and dwarf planets
Moons
Comets and asteroids

Question 2

All planets starting with the one closest to the sun

Answer 2

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

Question 3

3 dwarf planets in our solar system and where do they orbit

Answer 3

Ceres- Between Mars and Jupiter
Pluto- Further away from the sun than Neptune
Eris Further out still

Question 4

What is a galaxy

Answer 4

A large group of many millions of stars

Question 5

How many stars are there in our galaxy

Answer 5

Over 200 billion

Question 6

How many galaxies are there in the universe

Answer 6

80 billion

Question 7

What force does circular motion require

Answer 7

Centripetal

Question 8

What is the space between planets called

Answer 8

Interplanetary space

Question 9

Some conditions in interplanetary space

Answer 9

There is no atmosphere
The temperature varies from very hot to very cold
The gravitational field strength is close to zero, so objects are effectively weightless
There is a lot of cosmic radiation