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100

What is it called when birds fly to warmer climates for the winter?

Migration

100

If you have arachnophobia, which animal are you scared of?

Spiders

100

How many tentacles does an octopus have?

8

100

Which sea animal has tentacles that sting?

A jellyfish 

100

Who was the first Black president of the United States?

Barack Obama 

200

How many teeth do most adult humans have?

32

200

What do you call a person who studies weather?

A meteorologist 

200

What is a human’s average temperature?

98.6

200

How many arms do most starfish have?

5

200

What animal is considered to be the national bird of America?

Bald eagle 

300

Who was the first human to step on the Moon?

Neil Armstrong

300

What is precipitation that falls in the form of ice crystals called?

Snow

300

What is the largest internal organ in the human body?

The liver

300

How many ribs do humans have?

12 pairs 

300

What is the tallest animal in the world?

Giraffe 

400

What is the largest known living land animal?

An African bush elephant 

400

What are the three states of matter?

Solids, liquids and gas

400

How many bones does a worm have in their bodies?

None

400

What are the hot balls of light that appear in the night sky called?

Stars

400

Which fish has no brain or heart?

Jellyfish

500

What do you call a person who studies rocks?

A petrologist

500

How many muscles are there in the human body?

Approximately 640 muscles

500

How many bones does the human body have?

206

500

Why do things fall when you drop them?

Gravitational force!

500

How many phases does the Moon have?

8