Universe
What is a planetary system?
Stars that are orbited by planets or other objects
Before the Big Bang, what exsisted?
Nothing
Black
What is the name of our star?
Sun
What is the loudest animal on earth?
Blue whale
What is a galaxy?
A cluster of stars, dust, gas, and matter
At the very beginning, the universe was what?
Small and hot
What is the Doppler Effect?
The change in the frequency of a sound based on if the object is moving toward or away from you.
What is the primary fuel for stars?
Hydrogen & Helium
The Chernobyl accident created the world's most radioactive substance. What was it called?
Elephant's foot
How old is the universe?
13.8 billion years
What are the 3 main pieces of evidence that supports the Big Bang Theory?
Background Radiation, Lots of Hydrogen and Helium, Redshifting
What color of light has the highest frequency?
Blue
We can't call a protostar a star until what happens?
Nuclear Fusion
How hot is a lightning bolt?
50,000 degrees F
How far is a light year in miles?
6 trillion miles
What happened 3 minutes after the Big Bang?
Atomic nuclei form
List the colors in order from highest frequency to lowest frequency.
violet, indigo, blue, green, yellow, orange, red
List the color of stars from the coolest to the hottest.
Red, yellow, blue
A group of cats is called a what?
clowder
Approximately how wide is the universe in light years?
100 billion light years
Who accidentally discovered background radiation?
Arno Penzias and Robert Woodrow Wilson
If light had a voice, which color would have the lowest voice?
Red
When our sun dies, it will turn into what?
a white dwarf
On average, how much does an adult brain weigh?
3 pounds