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100

What is the largest known land animal?

Elephant

100

What do you count on a tree to tell how old it is?

Rings

100

What is the process of breaking down food called? 

Digestion

100

What planet in our solar system has the most gravity?

Jupiter

100

What is the calm, center part of a hurricane called? 

The Eye

200

How many bones do sharks have? 

Zero. They are entirely made out of cartilage. 

200

Where is the world's most active volcano located? 

Hawaii

200

What is the job or role of white blood cells? 

To fight of disease or infection

200

What is the symbol for the element silver? 

Ag

200

What ongoing process allows water to be recycled? 

The water cycle or hydraulic cycle

300

Frogs belong to which animal group?

Amphibians

300

What is the tallest type of grass?

Bamboo

300

The smallest bones in the body are located where? 

In the ear
300

Atoms are made up of what three parts? 

Neutrons, Protons, and Electrons

300

What element is a diamond composed of?

Carbon

400

What animal is the closest living relative to a human?

Chimpanzees

400

What is the name for the most recent supercontinent?

Pangea

400

How many vertebrae are in the human spine?

33

400

What is the quality of an object or substance that allows it to float on water or another liquid?

Buoyancy

400

What is the rarest blood type?

AB-

500

What animal has three hearts? 

An Octopus

500

About how old is the Earth? 

4.5 billion years old

500

Where can you find most of the sweat glands in the human body?

On the hands and feet

500

How do you calculate density?

Density= mass divided by volume

500

How many elements are on the periodic table?

118