The universe Flashcards
The universe
A large collection of billions of galaxies
A galaxy
A large collection of stars
Our Sun
One of many billions of stars which form the Milky Way Galaxy
Where is the sun located
The sun is about half way along one of the spiral arms of the Milky Way
What the 8 planets in our solar system called (in order)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Uranus
Name the dwarf planet in our solar system
Pluto
Define Asteroids
Lumps of rock and metal that orbit the sun, usually found in the asteroid belt
Define Comets
Lumps of ice and dust that orbit the sun
Describe the orbit of a comet
Highly elliptical
Some travel from near the sun to the outskirts of our solar system
Explain how the gravitational force keeps an object in orbit
The gravitational force acts towards the body the object is orbiting, which change the direction of the velocity, So the object is constantly changing direction without changing speed and moves in a curved path around the larger object
