Space Rocks
How many space rocks orbit our sun?
Millions or Billions
millions
What are comets mostly made of?
ice, dust, frozen gases, rock
What do we call the large strip of asteroids found among the planets?
the asteroid belt
Another name often referred to for a meteor.
shooting star
What is at the center of the solar system?
the sun
What type of star is our sun?
main sequence
yellow dwarf
What is an example of a space rock
asteroid, meteoroid, comet, planet, moon
Name one part of a comet
nucleus, coma, tail
Name the two planets the asteroid belt lays between.
Jupiter and Mars
How are meteoroids formed
planetary debris, solid comet remains, asteroid collisions
This force keeps planets orbiting the sun and us on the ground.
gravity
Which color stars are the hottest?
blue; blue-white
What is the difference between a meteoroid and an asteroid?
the size; location in space
What are comets also known as?
dirty snowballs
What is the largest Asteroid in the Asteroid Belt?
Ceres
A piece of stone or metal that travels through space
meteoroid
Name the two groups of planets
Hint: think about their position to the sun
inner and outer
What are the 3 types of galaxies?
spiral, elliptical, irregular
What do we call the hole left on Earth's surface that shows evidence that a meteor hit the Earth?
a crater
What is one of the comet's tails made of?
dust or melted ice
What are asteroids made from?
large rock fragments; bits and pieces of space; dirt that did not form into planets
The bright streak of light we see when a meteoroid enters our atmosphere is called what?
meteor
What is one thing the universe is made up of?
rock, gas, empty space, dust
Most galaxies are redshifting or blue shifting from us?
redshifting
What protects Earth from metoers and asteroids?
atmosphere, Jupiter
The most popular comet last spotted in 1986. One of the most famous comets.
Halley's comet
What pushes the comet tail away from nucleus or sun?
solar wind
meteorite
Name three things you can find in the solar system.
planets, stars, comets, asteroids, meteors, dust,
What is evidence of the Big Bang theory
abundance of elements; inflation(expanding universe); redshift; cosmic background radiation