VOCAB
At the end of it's life cycle, a high-mass star sometimes leaves behind an invisible object in which gravity is so strong that most radiation cannot escape
What is a Black Hole?
Term for a celestial body made up of gases that can give off light light, made mostly of H and He
What is a star?
A large collection of stars, gas and dust.
What is a galaxy?
Type of planet that is rocky, dense and relatively small; Mercury, Venus, Earth and Mars.
What are terrestrial planets?
The name of the galaxy we live in?
What is the Milky Way?
The distance that light can travel in one year-This is about 9.5 trillion km
What is a light year?
Actual brightness of a star
What is luminosity?
Spherical body that orbits the sun.
What is a planet?
They enter the Earth's atmosphere. Some are shooting stars.
What is a meteoroid?
A low-mass, medium size star that we orbit.
What is the Sun?
Responsible for holding the stars, gas and dust together in a galaxy.
What is gravity?
A STAR IS BORN!-stars are born here
What is a nebula?
Term used to describe several planets orbiting a star.
What is the Solar System?
Occurs throughout most of a star's lifetime and emits light.
What is nuclear fusion?
Similar to a planet but not large enough to gravitationally clear its orbital region of most or all other celestial bodies. Ex. Pluto
What is a dwarf planet?
Made of ice, rock and dust. When they travel by the sun it makes the ice melt giving it a tail. There are about 3200.
What is a Comet?
What is the order of surface temperature of stars from coolest to hottest?
What is.....Red, Orange, Yellow, Yellow-White, White, Blue-White, Blue
The sum of all space, matter and energy that exist.
What is the Universe?
Made of metal and rock material. They tend to clump together. Some found as a belt between Mars and Jupiter.
What is an asteroid?
Measure of a star's brightness as seen from Earth.
What is the apparent magnitude?
hot, dense core of matter that remains from the collapse of low-mass star. It is about the size of Earth
What is a White Dwarf?
Stage in a life cycle of a high-mass star is characterized by the star collapsing and throwing its outer layers into space.
What is a Supernova?
A small celestial body that orbits most of the planets.
What is a Moon?
Have thick, gaseous atmospheres; small rocky cores; a ring systems of ice, rock and dust. Jupiter, Saturn, Uranus, and Neptune.
What are gas giants?
What is the order of the planets beginning from the sun, you may include the dwarf planet?
What are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto (dwarf planet)?