How the Solar System Works
What is the collection of planets and other bodies that orbit the sun?
A solar system
The _____ is a large star in the center of the solar system and all the planets and other bodies orbit around it.
Sun
What is a body that orbits a star?
A planet
What is the study of objects outside Earth's atmosphere?
Astronomy
A ball of gas that is held together by gravity and that gives off lights energy is?
A star
What is a complete spin on an axis called?
Rotation
What causes the other planets to orbit around the sun?
Gravity
There are eight known what in our solar system?
Planets
What is a large rock fragment that orbits the sun in a group called the asteroid belt?
An Asteroid
A star usually becomes a what during the middle years of its life?
A red giant
When a planet follows its orbit, it completes a what?
Revolution
______ are cool spots that form in pairs on the sun's photosphere.
Sunspot
What separates the inner and outer planets and where is it located?
The Asteroid Belt, in between Mars and Jupiter.
A ________ is a solid object made of ice or rocks that falls through Earth's atmosphere.
Meteor
The distance light travels in one year.
What is it called when something moves in an elliptical path, like the planets around the sun?
Orbit
A __________ is a violent burst of energy that sends gas, light, ultraviolet rays and X-rays shooting into space.
Solar Flare
Which planet is both really hot and really cold?
Mercury
________ are bodies that orbit the sun in large elliptical paths; they are made mostly of rock, ice, frozen gases, and dust particles, and they develop tails as they travel.
A comet
At the end of its life, a star can be which of the following?
A white dwarf, a black dwarf, a supernova, a black hole, or all of them.
All of them
A group of many stars and other bodies is a what?
Galaxy
What are the three layers of the sun's atmosphere?
Photosphere, chromosphere, and the corona.
Name all the planets in order.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
What causes a comet to have two tails?
A solar flare
How is a black hole created?
The collapsing of a star