Earth's Geosphere Part 1

How old is th Solar System?

• 4.5 Billion Years Old

• 4.5 Million Years Old

• 6 Billion Years Old

How old is the Earth, ignoring geologic processes?

• 4.5 Billion Years Old

• Less than 4.5 Million Years Old

How did we determine Earth's Age?

• Studying Layers of Sedimentary Rocks

• Radiometric Dating of Earth's Rocks

• Smaller less complex meterorites that haven't changed since the solar system was made

Is oceanic rock older or younger than continetal rock?

• Older due to building up of rock over time

• Younger due to processes happening on the sea floor

Is a meterorite bigger and more complex than a planet?

• Yes

• No

Why are Earth rocks different ages?

• Due to weathering an volcanic processes

• They are all actually the same ages

What does "accretion" mean?

• Rocks and debris collide and stick together forming meteorites and eventually planets

• Meteors crash into each other and break apart

What is a nebula?

• A rain cloud

• A cloud of space dust and gas

• A cloud of radioactive material

What is a proto-planetary disk?

• A spinning disk around a sun of not yet formed planets

• An explosion in space

• A solar system

A Supernova is an _______ that started the formation of a new solar system