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Flashcards in Space And Beyond Deck (9)
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1
Q

Measuring time:

One month

A
  • One month is approximately 1/12 of the time taken for the Earth to orbit around the Sun.
  • It can also be measured by the time it takes for the moon to complete one whole cycle.
2
Q

What is a lunar month?

A

The time between new moons.

3
Q

How do planets stay in orbit?

A
  • Without the Sun the Planets would fly away.
  • The Sun has a very large mass therefore it has a lot of gravity.
  • This gravity pulls pulls the planets into it. This causes the planets to orbit.
4
Q

What is the order of the planets?

A
Sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
5
Q

Why does Day and Night occur?

A

As the Earth orbits the Sun it spins about its own axis.

6
Q

Why is a day in the Summer longer than in the Winter?

A

Because the Earth is tilted on its axis the different parts of the Earth are tilted towards or away from the Sun.

7
Q

Where is it always night?

A

North Canada, Norway, Ice-Land, Finland.

8
Q

When does the equinox occur?

A

Vernal Equinox - 21st March

Autumnal Equinox- 21st September

9
Q

Seasons occur because…

A
  • The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later
  • The Earth’s movement around the sun causes the seasons.