Celestial Bodies Flashcards
What is a celestial body?
A celestial body is a general name for an object that is in Space.
What is astronomy
The study of everything in space
What is a meteor?
A meteor is a solid object from outer Space that enters the Earth’s atmosphere.
What is an asteroid?
An asteroid is a rocky celestial body greater than 1 m, smaller than a planet, which orbits the Sun.
What is a comet?
A comet is a ball of frozen gases, ice, rock and dust with a highly elliptical orbit. ‘Highly elliptic’ means their orbit looks more like an oval than a circle.
What is a planet?
A planet is any object that orbits a star, is large enough to form a rough sphere under its own gravity, and has cleared its orbit.
When
What is Gravity
Gravity is the force that pulls
matter together
What determines a planets gravitational pull
Planet’s mass and size determine its gravitational pull
What keeps a planet in irbit
Speed of a planet Keeps it in or bit around
the sun
Why do planets have their own gravity
Each planet has its own gravity, based on its size and the speed
What planet is Furthest from the sun?
Neptune
What planet has the largest mass
Jupiter
What planet is the hottest
Venus
What planet is the coldest
Neptune
What planet has the longest day
Venus
