1
2
3
4
5
100
The Mariana Trench is in this ocean.
Pacific
100
The Everglades are located in this state.
Florida
100
A group of dolphins are called this.
Pod
100
Tides are primarily caused by the gravitational pull of this.
Moon
100
The Northern Lights are caused by particles from the ______.
Sun
200
The Union Jack is the flag of this country.
UK
200
This type of volcanic rock is so light it floats on water.
Pumice
200
Galileo was placed under house arrest for saying this orbits the sun.
Earth
200
This metal turns green when it oxidizes.
Copper
200
The first T. rex fossil was discovered in this US state.
Montana
300
A spring that shoots hot water into the air is called this.
Geyser
300
The main protein in human hair and nails.
Keratin
300
This hemisphere experiences summer in December.
Southern
300
This prehistoric shark had teeth the size of a human hand.
Megalodon
300
This part of the brain controls balance and coordination.
Cerebellum
400
This country connects Central and South America.
Panama
400
Fossils are most commonly found preserved in this kind of rock.
Sedimentary rock
400
Taste buds are replaced roughly this many days.
10
400
Newton reportedly got his gravity idea after watching one of these fall.
Apple
400
Rust forms when iron reacts with this.
Oxygen
500
This US state contains the most freshwater lakes.
Alaska
500
This bird is known for its silent, nearly noiseless flight.
Owl
500
Identical twins come from this many fertilized eggs.
One
500
This part of the eye has no blood vessels.
Cornea
500
This nerve is the longest in the human body.
Sciatic