Big Bang
This is the “afterglow” or “leftover” heat from the big bang that spreads in all directions of the universe and helps support the Big Bang theory.
What is cosmic microwave background radiation?
This is the average distance between the Sun and Earth?
What is an astronomical unit?
This is how scientific notation can be used when studying space.
What is simplifying large numbers such as the vast distances between objects in space or large objects such as the mass of the Sun?
This is the force responsible for the Earth holding our moon in orbit.
What is gravity?
Put these in order from smallest to largest:
galaxy, star, moon, universe, planet, solar system
What is moon, planet, star, solar system, galaxy, universe?
This piece of evidence was discovered by Edwin Hubble and is used to show that all galaxies were moving away from us and away from each other.
What is the redshift of galaxies?
Earth is this many astronomical units away from the Sun.
What is one?
Convert 300,000,000 km into scientific notation.
What is 3x108?
This is the force responsible for holding quarks together inside protons and neutrons.
What is strong force?
This type of galaxy has no particular shape.
What is an irregular galaxy?
These two elements are the most abundant in our universe and were the first two elements to form.
What are hydrogen and helium?
The unit of measurement best used when measuring the distance between the Sun and Proxima Centauri.
What is a light year?
One light year (LY) is equal to about 63,241 astronomical units (AU). The Milky Way Galaxy is about 100,000 LYs across. How many AUs is the Milky Way Galaxy. Write your answer in scientific notation.
What is 6.3241 x 109 AUs?
This is the second weakest fundamental force.
What is weak force?
This is why astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter.
What is the total amount of mass in galaxies measured by astronomers is always more than what they can see?
This is why the Big Bang is "only" a scientific theory and not a scientific law.
What is the Big Bang provides an explanation as to HOW the universe was created and WHY the universe is not only expanding, but also WHY there is radiation all over the universe?
The unit of measurement best used when measuring the distance between Earth and Mars.
What is an astronomical unit?
A human heart beats an average of 80 beats per minute. How many beats is this in a day? Write your answer in scientific notation.
What is 1.152 x 105 beats?
This force holds ionic compounds like salt together.
What is electromagnetism?
This shows that a star or galaxy is moving towards the Earth or the Earth is moving towards a star or galaxy.
What is blue shift?
This person had the idea of the expanding universe before Edwin Hubble, but did not have the evidence to back up his ideas.
Who is Georges Lemaitre?
This is the number of kilometers in a light year.
What is 9.5 trillion km?
In 2009 there were 2.35x106 ferrets kept as pets in India. At the same time there were 3.43x105 ferrets kept as pets in France. How many pet ferrets were in total between the two countries? Write your answer in scientific notation.
What is 2.693x106 pet ferrets?
This is the only fundamental force between objects that only attracts, and never repels.
What is gravity?
This is how the age of the universe can be calculated using the Big Bang model.
What is use the rate of the expansion of the universe to calculate the time at which the expansion started and determine the age of the universe?