8 ASTROPHYSICS Flashcards
1
Q
Unit for mass
A
Kilogram (kg)
2
Q
Unit for distance
A
Metre (m)
3
Q
Unit for speed
A
Metre/second (m/s)
4
Q
Unit for acceleration
A
Metre/second [squared] (m/s[squared])
5
Q
Unit for force
A
Newton (N)
6
Q
Unit for time
A
Second (s)
7
Q
Unit for gravitational field strength
A
Newton/kilogram (N/kg)
8
Q
Define a universe
A
A large collection of billions of galaxies
9
Q
Define a galaxy
A
A large collection of billions of stars
10
Q
What galaxy is our solar system in
A
The Milky Way
11
Q
In terms of g, what happens when the mass of a plant increases
A
g increases
12
Q
What do artificial comets orbit
A
Earth
13
Q
What do comets orbit
A
Sun
14
Q
What does moons orbit
A
Planets
15
Q
What do planets orbit
A
Stars
