Space Flashcards
How long does it take for the earth to orbit the sun
1 year= 365.25 days
The moon is a ______________ of the earth
Satellite
Why can we see the moon?
Because it reflects light from the sun
Why are there phases of the moon?
Because we cannot always see all of the part that is lit by the sun
What happens in a solar eclipse
The moon blocks the light from the sun creating a shadow on the earth for a short period of time. It is only a small amount of time as the earth is moving and rotating as well as the moon.
What happens in a lunar eclipse
When the moon goes into the shadow of the earth creating a red moon
Definition of mass
Mass is the amount of matter something contains
What is mass measured in?
Kilograms
Definition of weight
Weight is the force of gravity pulling on a mass
What is weight measured in
Newtons
What is gravity
Gravity is a pulling force of attraction between to masses
Name two conditions in which gravity can be stronger
If the objects have larger masses
If the objects are closer together
Why is gravity stronger on earth than the moon
Because the earth has a bigger mass
True or false: if you went on the moon your mass would change
False however weight would be less as there is less gravity
What is a satellite
Anything that orbits around a planet
True or false: the earths axis is tilted
Trueeeeeeeee
How many planets orbit the sun
Nineeeeeeeeeee
Definition of orbit
The. Regularly repeated elliptical course of a celestial object or spacecraft about a star or a planet
Definition of a polar orbit
Satellite orbit that passes of the polar regions especially ones who’s plane contains the polar
Definition of a Geostationary orbit
A circular orbit positioned approximately 35,900 km above the Earths equator. an object in this orbit will appear stationary in relation to the earth
List the four inner planets
Mercury Venus Earth and Mars
List four outer planets
Jupiter Saturn Uranus and Neptune
