Planets
What is the sun made of mostly?
hydrogen, helium
What are the holes on the moon's surface called?
craters
Where do we get our planet names?
from Roman and Greek gods
Comparative and superlative of good.
better, best
This planet has poisonous gas
Venus
What type of objects is the sun?
star?
What are the smaller rocks that orbit the sun?
asteroids
What happened when an asteroid hit the earth 65 million years ago?
The dinosaurs died.
one-> first
two-> second
five ->
fifth
What planet is not a planet anymore.
Pluto
How long does it take the earth to orbit the sun?
365 days
What do you call the long chain of rocks that separate the inner and outer planets?
asteroid belt
What is a rover?
A robot we send to other planets to record information.
What does expanding mean?
getting bigger
These are the inner planets.
Mercury, Venus, Earth, and Mars?
How many planets orbit the sun?
8 planets
What are the rocks that light up when close to the sun?
comets
Howe do we measure things very far away?
We have to measure the changing light from the 2 objects and compare.
What is an atmosphere and what does it do?
gas surrounding the planet, keeps temperature and gas close to the planet
This planet has a ring but is not easily seen.
Jupiter
What does the sun do for earth? Give 3 things.
provide energy (heat and light), gives us seasons, help us produce Vitamin D, gives us our weather (water cycle, wind, air pressure)
Why does the moon shine?
It reflects light from the sun.
Why is there no oxygen in space?
no strong gravity, oxygen is reactive (no O2 gas that we breathe)
What is a galaxy and what galaxy are we in?
a bunch of stars and dust controlled by gravity, Milky Way Galaxy