Forces that Change the Earth and Landforms Review3rd Grade

Question 1Volcanoes create new land on the

Earth’s surface when –A. Lava cools and hardens to form

rockB. Magma forms giant underground

chambersC. Saltwater touches lava and forms

steam

Answer• Lava cools and hardens to form rock

Lava is molten rock. When it cools, it hardens into rock. This creates new land.

Question 2A landslide is a most likely

caused by –A. Strong windsB. Breaking rocksC. Heavy rains

AnswerHeavy rains

Heavy rains cause the soil to loosen. This may eventually cause it to slide downhill.

Question 3Which of the following best

describes how an earthquake changes the Earth’s surface?A. Throws rocks and ash into the airB. Violently shifts the surface of the

EarthC. Forces lava through holes in the

ground

Answer• Violently shifts the surface of the Earth

The shifting the of the surface of the earth by an earthquake can cause cracks in the ground.

Question 4Which event forces melted rock

from deep in the earth towards the surface?A. EarthquakesB. LandslidesC. Volcanic eruptions

AnswerVolcanic eruptions

A volcanic eruption causes magma to erupt from underneath the surface of the Earth. Once the magma has erupted, it is called lava.

Question 5_____________________ is the

movement of weathered rock and soil.

AnswerErosion

Question 6A ________________ is an

underwater earthquake.

AnswerTsunami

Question 7A _______________ is the rapid

movement of rocks and soil down a hill.

AnswerLandslide

Question 8______________ is the process of

rocks breaking down into smaller pieces.

AnswerWeathering

Question 9Funnel cloud is another name for

a _____________________.

AnswerTornado

Question 10______________ are slow moving

frozen rivers.

AnswerGlaciers

Question 11An opening in the earth’s crust

from which lava flows is a ----

AnswerVolcano

Question 12A mound of earth with a rounded

top which is smaller than a mountain is a ------

AnswerHill

Question 13A thin natural waterway that

allows water to flow into a lake or ocean is a -----

AnswerRiver

Question 14A thin strip of land that extends

into a body of water is a -----

AnswerPeninsula

Question 15Low land between hills or

mountains is called a -----

AnswerValley

Question 16A large natural area of water

surrounded by land is a -----

AnswerLake

Question 17A large, tall rock that extends

into the air which is larger than a hill is a -----

AnswerMountain

Question 18A natural area of water that is

mostly surrounded by land is a -----

AnswerBay

Question 19An area of land that is completely

surrounded by water is an -----

Answerisland

Question 20A large area of flat land or gently

rolling land is a -----

AnswerPlain