(P1) Topic 7- Astronomy Flashcards
1
Q
Order of the planets
A
Mercury, Venus, earth, mars, Jupiter, Saturn, Uranus, Neptune
2
Q
What are moons
A
Natural satellites that orbit a planet
3
Q
What are asteroids
A
Smaller objects that orbit the sun. The orbits are highly elliptical and may take many millions of years to complete. The asteroid belt is between mars and Jupiter
4
Q
Calculation for weight
A
Weight= mass x gravitational field strength
5
Q
Gravitational field strength of the earth
A
9.8 (10)
6
Q
Who was Ptolemy
A
An Egyptian astronomer who described one of the earliest ideas for how the solar system is structured
7
Q
What was at the centre of the solar system in early depictions of the solar system
A
The earth
8
Q
Who is credited with putting the sun at the centre of the model solar system
A
Nicolas Copernicus
