Earth Quiz

Of the following organisms, which was around (or has been around) for the shortest amount of time?

• Dinosaurs
• Mammals
• Humans
• Reptile

The geologic time scale is divided by major changes or events such as

• mass extinctions
• the extinction of one species
• the development of one new species
• a small temperature change

How old do Paleontologists believe the Earth is?

• 2015 years old
• 3.6 billion years old
• 4.6 billion years old

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic

According to the law of superposition, which layer is the youngest?

• A
• B
• C

What time Era do we live in?

• Triassic
• Cenozoic
• Paleozoic
• Tertiary

Fossils are:

• preserved remains

• living plants

• old events

Youngest rock layers are found on the _________ .

• bottom

• top

Oldest rock layers are found on the ___________.

• bottom

• top

Rock layers are called __________.

• data

• cake

• strata

• fossils