Review - Tectonic Plates- Mountain - Earthquakes - Volcanoes

What's true about the continental drift theory?

• All scientists believed it since its development by Alfred Wegner.

• One evidence that proves it is that the earth was always separated in different continents.

• One evidence that proves it is that fossils of some animals and plants of the same species were found in separated parts of the Earth.

• The continents broke apart in a couple of years to form what we see now.

Which alternative complements the following idea: "Continental drift was a theory that explained how continents shifted position on Earth's surface. "

• "For example, fossils of the ancient reptile mesosaurus are only found in southern Africa and South America."

• "It explains that Earth's crust is fractured into rigid, moving plates."

• "Millions of years ago, it broke up and drifted to their current positions."

• "But geologists didn’t believe it, because Wegner didn't have a good model to explain how the continents moved apart."

ABOUT MOUNTAINS’ FORMATION IT’S CORRECT TO SAY.

• Old mountains tend to be steep and pointy due to the process of erosion.

• Mountains only form when tectonic plates diverge.

• All mountains are formed over millions of years.

• Volcanic mountains can be formed in only a few days.

Dome mountains are created when _______ rock called _____ pushes up below the surface of the Earth, forming a bump.

Which of the following measures the size of an earthquake?

• Seismograph

• Tachometer

• Thermometer

• Monograph

Which of the following statements is not true?

• An underwater earthquake can cause a tsunami.

• The hot molten rock deep below Earth's surface is called lava.

• A volcano is a rupture on the crust of the Earth.

• The Earth's crust is constantly moving throughout the world.

Which of the following can cause a tsunami? Mark the possible options.

• earthquakes

• landslides

• a mountain forming

• a ship accident

WHY IS THE LOCATION OF THE INDONESIAN ISLANDS CALLED THE “RING OF FIRE”?

• It refers to the area where wildfires are more common.

• Because it’s where tectonic plates drift apart causing the separation of continents.

• It’s where seismic activities are rare.

• It refers to the area when the activities of tectonic plates cause more natural disasters.

WHAT’S TRUE ABOUT THE STAGES OF VOLCANOES?

• A dormant volcano is the one which has erupted some years ago, and there is a possibility that it will erupt again in the future.

• Volcanoes that erupted thousands of years ago and there isn’t a possibility to erupt again are considered dormant.

• An active volcano is the one that has erupted recently, but won’t erupt again anytime soon.

• An extinct volcano will erupt in the near future.

WHAT’S INCORRECT ABOUT THE FORMATION OF VOLCANOES?

• They can be formed on both land and in the ocean around the boundaries of tectonic plates.

• They are formed when a continental plate moves under the oceanic plate, in the subduction zone.

• They are formed when tectonic plates diverge and magma from the earth's upper mantle rises up to fill the spaces.

• When volcanoes form in the ocean, they form new crust on the surface because the magma cools down.