Science

What does the theory of Continental Drift suggest?

• Continents are shrinking.

• Continents are stationary.

• Continents are in constant motion on the surface of Earth.

• Continents are expanding.

What is a fossil?

• A type of rock.

• A preserved remnant or evidence of past living organisms.

• A type of soil.

• A type of mineral.

According to the principle of Superposition, where are the oldest rocks found?

• On the top layer.

• In the outer layer.

• In the middle layer.

• On the bottom layer.

What does the theory of Plate Tectonics state?

• The Earth's surface is a single solid mass.

• The Earth's surface is divided into large plates of rigid rocks that move with respect to each other.

• The Earth's surface is made of liquid magma.

• The Earth's surface is unchanging.

What is Seafloor Spreading?

• The process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.

• The process of ocean currents changing direction.

• The process of ocean water evaporating.

• The process of oceanic crust sinking into the mantle.

What are Mid-Ocean Ridges?

• Flat plains on the ocean floor.

• Volcanic islands in the ocean.

• Mountain ranges in the middle of the oceans.

• Deep trenches in the ocean.

What happens during a Magnetic Reversal?

• The Earth's magnetic field strengthens.

• The Earth's magnetic field weakens.

• The Earth's magnetic field reverses direction.

• The Earth's magnetic field disappears.

What is the Asthenosphere?

• The rigid outermost layer of the Earth.

• A plastic layer within the mantle.

• The core of the Earth.

• The crust of the Earth.

What is the Lithosphere?

• The plastic layer within the mantle.

• The inner core of the Earth.

• The liquid outer core of the Earth.

• The rigid outermost layer of the Earth.

What is a Divergent Plate Boundary?

• The boundary between two plates that are stationary.

• The boundary between two plates that slide past each other.

• The boundary between two plates that move away from each other.

• The boundary between two plates that move towards each other.