521 Ocean Intro Quiz

Scientist think the Earth is ___ years old.

• 4,500
• 45,000
• 4.5 million
• 4.5 billion

How long ago did the oceans form?

• about 6 billion years ago

• about 3.8 billion years ago

• about 3 million years ago

• oceans have always been there

What must have happened for the oceans to be able to form?

• the moon must have been formed

• the temperature of the atmosphere must have been less than 212 degrees F.

• Earth's rotation must have slowed to today's speed

• The Coriolis effect

in 1960, the theory of _________________ was formulated and accepted, which explains how the continents form and reform throughout the years.

• Pangea

• Plate Tectonics

• Continental Drift

• Continental Formation

Plate Tectonics theory says that the Earth's outer mechanical layer, the _______________ is divided into large, continent sized plates that are constantly moving.

• asthenosphere

• mantle

• lithosphere

• crust

Where tectonic plates meet are called ________________, and there are 3 kinds.

• faults

• convergence

• plates

• boundaries

When plates are moving towards each other, there is a ___________ boundary.

• convergent

• diverent

• transform

When plates move away from each other in opposite directions creating a ridge, there is a _______________ boundary.

• convergent

• divergent

• transform

When plates slide past each other, a _____________ boundary occurs.

• convergent

• divergent

• transform

Alfred Wegener hypothesized that about 250 million years ago the continents were joined together in a supercontinent called ________________.

• Pangea

• Plate Tectonics

• Continents

• Continental Drift