Space Flashcards
1
Q
what is a satelite?
A
eg the earths natural satellite is the moon
an object that is in orbit around a planet
2
Q
what is gravity?
A
the force that attracts objects to each other. the larger the mass, the larger the gravity.
3
Q
how to get gravitational field strength (formula)
A
weight in N = mass in kg * gravitational field strength
4
Q
summer (seasons)
A
the northern hemisphere is tilted towards the sun
5
Q
winter
A
the northern hemisphere is tilted away from the sun
6
Q
why does an astronaut weigh less on the moon than on earth?
A
the force of gravity is weaker on the surface of the moon than on the earth
7
Q
why do we have seasons?
A
the earths axis is tilted
8
Q
in which direction does the earth spin?
A
from west to east
