We know the universe is expanding because when we observe other galaxies they all are doing this
What is red shift?
These two bodies control the tides
Energy is produced in the core of a star through this process.
What is nuclear fusion?
The asteroid belt is located here
What is between Mars and Jupiter?
The outdated model which states that the Earth is the center of the solar system and universe
What is geocentric model?
The shape of our galaxy.
What is spiral?
The length of time it takes for the Moon to complete a cycle of all of its phases.
what is 29.5 days?
After the Sun expands and becomes a red giant, it will become this.
What is a white dwarf?
The age of our solar system
What is 4.6 Billion years?
Correct model which states that the Sun is at the center of the solar system.
What is the heliocentric model?
The age of the universe
What is 13.8 billion years ago?
Tides are highest when the moon is ________ to or _______ from earth.
What is closest and furthest?
Stars form from these
What is a nebula?
The planet with the lowest density
What is Saturn?
The electromagnetic wave with the shortest wavelength
What is gamma rays?
Leftover energy from the big bang
What is cosmic background radiation?
The largest full moon of the year
What is a supermoon?
This factor determines how a star's life will end
What is original mass?
DAILY DOUBLE!
The planet that is most similar to Earth in size
What is Venus?
Eclipse that occurs during a new moon
What is a solar eclipse?
where did all of the elements besides hydrogen in the universe come from?
What is supernova/ stars
What is New Moon?
The distance absolute brightness is measured from
What is 10 parsecs?
The cloud of dust that became the planets
What is the accretion disk?
eclipse that happens during a full moon
What is a lunar eclipse?