Fast Land Changes Quiz

What happens during a landslide?

• Magma moves up from the mantle and erupts.
• Large pieces of land break off and slide down.
• The ground freezes and melts when it's warmer.
• Water in streams and rivers overflows the banks.

Why can floods be helpful?

• They form new islands in the oceans.
• They make Earth's mantle stronger.
• They damage many roads and homes.
• They can bring rich soil to an area.

What is melted rock from the mantle called after it has erupted from a volcano and reached the surface?

• plate
• magma
• lava
• crust

What can cause earthquakes?

• Heavy rains make rivers overflow their banks.
• Tectonic plates push and slip past each other.
• Strong winds can push apart pieces of land.
• Waves travel across the seas and break on land.

Many volcanoes are EXTINCT and will never erupt. Which word is similar to EXTINCT?

• alive
• dead
• warm
• lava

Which sentence about volcanoes is FALSE?

• Volcanoes give rich soil that is good for farming.
• Volcanoes can erupt and the lava can form islands.
• Volcanoes can spit out ash, molten rock, and gases.
• Volcanoes are all active and can erupt at any time.

Both magma and lava are molten rocks. How are they different?

• Lava is very cold and hard, and magma is very hot.
• Magma is underground, and lava is on the surface.
• Lava flows to the mantle, and magma flows to the crust.
• Magma can cool to form hills, but lava cannot form hills.

What happens first?

• The wave travels across the sea and gets bigger.
• The earthquake causes a big wave to form.
• An earthquake occurs in the middle of the sea.
• A big wave hits a coast and causes flooding.

Which sentence about tectonic plates is TRUE?

• They lie on top of all the continents and the oceans.
• Earthquakes happen when they slip against each other.
• There are five major tectonic plates and two minor ones.
• The tectonic plates are part of the Earth's center core.

Sometimes during a storm, water can rise up very quickly and cause a flood. What do you think this type of flood is called?

• gradual flood
• flash flood
• lazy flood
• wet flood