Volcanoes and Volcanic Eruption: 8th Grade Science Worksheet

Fill in the Blank: Choose the correct word from the word bank to complete the sentence. The molten rock beneath the Earth's surface is called ________. Word Bank: magma, lava, eruption, crater, tectonic

• magma

• lava

• eruption

• crater

• tectonic

Fill in the Blank: Choose the correct word from the word bank to complete the sentence. When a volcano erupts, the molten rock that flows out onto the surface is called ________. Word Bank: magma, lava, eruption, crater, tectonic

• magma

• lava

• eruption

• crater

• tectonic

Fill in the Blank: Choose the correct word from the word bank to complete the sentence. Volcanoes are often found at the boundaries of Earth's ________ plates. Word Bank: magma, lava, eruption, crater, tectonic

• magma

• lava

• eruption

• crater

• tectonic

Fill in the Blank: Choose the correct word from the word bank to complete the sentence. A volcanic ________ happens when pressure inside the Earth forces magma, ash, and gases out of a volcano. Word Bank: magma, lava, eruption, crater, tectonic

• magma

• lava

• eruption

• crater

• tectonic

Fill in the Blank: Choose the correct word from the word bank to complete the sentence. The opening at the top of a volcano is called a ________. Word Bank: magma, lava, eruption, crater, tectonic

• magma

• lava

• eruption

• crater

• tectonic

Multiple Choice: Choose the correct answer. Which of the following is NOT a possible effect of a volcanic eruption?

• Formation of new land

• Increased rainfall everywhere in the world

• Ash clouds that can affect air travel

• Destruction of nearby habitats

Multiple Choice: Choose the correct answer. What is the main difference between magma and lava?

• Magma is solid, lava is liquid

• Magma is found underground, lava is found on the surface

• Lava is colder than magma

• Lava forms only underwater

Multiple Choice: Choose the correct answer. Which type of volcanic eruption is generally more dangerous to people living nearby?

• Gentle lava flow

• Explosive eruption

• Silent eruption

• Underwater eruption

Multiple Choice: Choose the correct answer. Which of the following is a positive effect of volcanic eruptions?

• Pollution of water sources

• Creation of fertile soil

• Destruction of crops

• Blocking sunlight for long periods

Multiple Choice: Choose the correct answer. What is a hot spot in relation to volcanoes?

• A place where two tectonic plates meet and slide past each other

• An area in the mantle where heat rises and melts rock, forming volcanoes

• The hottest place on a volcano’s surface

• The area around a volcano that is always warm