science fun facts!

How old is the Earth?

• as old as I am.... 11 or 12 years old

• between 4 and 5 billion years

• one million years old

• between 2 and 3 trillion years old

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what is the surface of the Earth made of?

• grass and water

• tectonic plates that float on a rocky mantle

• underneath the surface is lava

• mountains that just keep growing

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How many different species live on the Earth?

• 8.7 million

• 100 million

• 75 million

• 50 million

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What is the planet mostly covered with?

• trees

• mountains

• water

• grass

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How many people will live on the Earth by 2025

• 6 billion

• 500 million

• 5 billion

• 8 billion

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What is the average time for plastic to decompose?

• 450 years

• 2 years

• 250 years

• 600 years

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True or false: octopus have 3 hearts.

• True

• False

True or False: Humans plant more trees than squirrels

• True

• False

How high is the tallest tree in the world?

• 576 ft

• 721 ft

• 379 ft

• 282 ft

What planet is the hottest in the solar system?

• Venus

• Earth

• Mars

• Mercury