Fossils Study Guide (Group 2)

How do scientists learn about life on Earth from long ago?

• watching old movies

• studying fossils

• talking to dinosaurs

• reading books

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How old do scientists believe Earth is?

• 100 years old

• Over 4 billion years old

• 100,000,000 years old

• 1000 years old

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What do scientists use to understand what Earth was like long ago?

• Weather reports

• Fossil records

• Ancient maps

• Fairy tales

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What is a marker fossil?

• glows in the dark fossils

• fossils used to figure out the age of other fossils

• colorful rocks

• fossil from space

Which animal is an example of a marker fossil?

• Trilobite

• Elephant

• Dinosaur

• Sea Animal

What do fossils tell scientists about?

• The future

• When plants and animals lived and disappeared

• How to build a time machine

• What dinosaurs ate

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What do scientists call the long blocks of time in Earth’s history?

• Hours

• Months

• Periods

• Seconds

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What do scientists use to find out when different plants and animals lived?

• ocean waves

• fossil record

• stars

• maps

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Where are trilobite fossils mostly found?

• In trees

• In the ocean

• In layers of rock

• In bird nests

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How many years ago did trilobites become extinct?

• About 10 years ago

• About 250 million years ago

• About 1,000 years ago

• They are still alive today

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