Plate Tectonics

What is continental drift theory?

• The theory that the world started as one land mass, Pangea, and gradually drifted into the seven continents as we know it today.

• The theory that continents are fixed and immovable.

• The theory that continents are formed by volcanic activity.

• The theory that continents are created by ocean currents.

What are the 4 pieces of evidence that support the continental drift theory?

• Puzzle pieces, fossils, rock stripes, ice (climate)

• Volcanoes, earthquakes, ocean currents, tides

• Mountains, rivers, lakes, deserts

• Stars, planets, galaxies, comets

What is plate tectonics?

• The theory explaining the movement of the Earth's plates and the processes that occur as a result.

• The study of ocean currents and their effects on climate.

• The analysis of weather patterns and atmospheric conditions.

• The examination of the Earth's magnetic field and its changes.

What is a boundary?

• The edge of a plate or where plates touch

• The center of a plate

• The top of a mountain

• The bottom of the ocean

What occurs at a divergent boundary?

• Mountains form

• Plates move apart

• Plates collide

• Earthquakes occur

What occurs at a convergent boundary?

• Plates move apart

• Plates slide past each other

• Plates collide

• Plates remain stationary

What occurs at a subduction boundary?

• Plates move apart

• One plate moves under another

• Plates slide past each other

• Plates remain stationary

What occurs at a transform boundary?

• Plates move apart

• Plates collide

• Plates slide past each other

• Plates remain stationary

How many continents are there?

• 5

• 6

• 7

• 8

What theory combines the ideas of continental drift and seafloor spreading?

• Theory of Evolution

• Theory of Plate Tectonics

• Theory of Relativity

• Theory of Gravity