Comets, Meteorites and Asteroids
Asteroids are pieces of ________
Rock
______ is a massive celestial body made of gas and dust
A star
The color tells us its _________
Temperature
How far light travels in 1 year
Light-year
When were telescopes first used?
The 1600's
Asteroids are found mostly where
The Asteroid Belt
Stars are made of________(2 elements)
Hydrogen and helium
________ are the hottest type of star
Blue colored stars
________ tells how hot a star is.
Hertzsprung-Russel diagram
Refracting telescopes use lenses or mirrors
Lenses
Comets are made of __________
Ice
A white dwarf can turn into ____ different things
Two
Our sun is a hot/medium or cold star
Medium
______ is where most comets come from
Oort cloud
Biggest telescope is
James Webb
Comet that we see every 76 years
Haley's
A star needs this to make heat and light.
Fission
Coldest color of star
Red
What is a shooting star
A meteoroid
What are the 2 types of telescope?
Refracting and reflecting
Why do comets look bright?
The sun melts the ice off of them
What is the first step in a star?
Nebula Cloud
__________ are white and small types of stars
White Dwarfs
There are _____ types of meteoroids
3
_____ are tools that help us look at stars
Telescopes