Solar System COPY

Question 1

Freefall

Answer 1

When a body falls subject only to the earth’s gravitational field

Question 2

What is responsible for the movement of satellites (natural and artificial)

Answer 2

Gravity

Question 3

What is the difference between polar and geostationary satellites?

Answer 3

The difference is their positions in respect to the earth and time of one orbit/rotation

Question 4

Polar satellites

Answer 4

Polar satellites go over the poles -as the world turns, they travel over different locations.

Question 5

Uses of polar satellites

Answer 5

They are mainly used for earth mapping and spy satellites

Question 6

Geostationary satellites

Answer 6

Are equatorial. It has the same orbiting speed as the earth and moves with the same axis, so that it seems to be standing fixed in one place.

Question 7

Use of geostationary satellites

Answer 7

They are mainly used for communications

Question 8

If the earth didn’t have a tilted axis

Answer 8

Then we would not have seasons.

Question 9

Solstices

Answer 9

Longest/shortest day. The days are shorter in the winter because the sun is lower in the sky

Question 10

Equinoxes

Answer 10

Equal days and nights

Question 11

The planets

Answer 11

My very easy method just speeds up naming (planets)
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
(Pluto)

Question 12

Dwarf planets

Answer 12

Planets too small to count as a proper planet e.g Pluto

Question 13

Asteroids

Answer 13

Debris stuck in orbit

Question 14

Meteors

Answer 14

Debris fallen out of orbit

Question 15

The sun is one of roughly 10to the power of eleven stars in our galaxy, the milky way

Answer 15

Aa

Question 16

The Milky Way is one of roughly 10 to the power of 11 galaxies in the universe

Answer 16

Bb

Question 17

Mass is a property of body and does not change (is constant) wherever the body is, but weight depends on mass and on the local strength of gravity so it is not constant

Answer 17

-