The Universe
What is currently the best theory of how our universe began?
The Big Bang theory
What galaxy do we live in?
The Milky Way
What type of power allows a star to burn so brightly?
Nuclear Fusion
Name all of the planets in our solar system in the correct order.
Mercury Venus Earth Mars Jupiter Saturn Uranus and Neptune
Our universe is currently expanding
True
Roughly how old is our universe?
14.5 billion years old
What is the next closest galaxy to us?
Andromeda
During Nuclear fusion, atoms of hydrogen slam into each-other. What do they become once they collide?
Helium
What are the three criteria for a space object to be classified as a planet?
Must have enough gravity (mass) to form itself into a sphere (hydrostatic equlibrium) Must have cleared its orbit Must orbit the sun
Big stars live longer than small stars
False
When a object orbits another object and the orbit repeats itself without hurtling off into space or slamming into the larger object, what kind of orbit is it?
Closed Orbit.
What gives Galaxies their shape?
Gravity
What happens to a small star at the end of its life?
It becomes a white/black dwarf
What's the best theory of why Venus and Mercury do not have moons?
Too close to the sun
Light years are how far light travels in a year
True
What do we call the zone that is not too hot and not too cold that we believe life can exist in?
Goldilocks Zone
When looking at pictures of galaxies, patches of reddish pink gases are present. What are these patches full of? Hint: its the most common element in the universe
Hydrogen Gas
How are black holes formed?
The gravitational pull of the star is so great it overpowers the atomic forces
Name one place in our solar system where we believe there might be life
Europa, Titan, Enceladus, Io, Mars
Saturn is the only planet with rings in our solar system
False
What's one of the dangers of discovering extraterrestrial life? (not including an alien invasion)
Diseases, change in lifestyle etc.
Which type of Galaxy has mostly old stars in it?
Elliptical
Why are we said to be made of "star stuff?"
The atoms in our body were formed from explosions of large stars
Name a dwarf planet that is not Pluto
Ceres, MakeMake, Eris etc.
When they collapse large stars always become blackholes
False, they can become Neutron Stars