Earth's Surface

Which of the following is NOT a true statement about landforms?

• Some landforms change slowly.
• Some landforms change quickly.
• Some landforms change because of the activity of humans and other animals.
• Landforms always stay the same, even after a long time.

Match the description of the landform to the name of the landform: canyon

• A body of flowing water that empties into an ocean, valley, lake or river.
• The low land that runs between mountains or hills.
• A part of the earth’s crust that has been raised high above the
    surrounding lowlands.
• A deep valley with steep sides shaped by water.

Match the description of the landform to the name of the landform: sand dune

• A hill or ridge of loose sand formed by the wind.
• A deep valley with steep sides shaped by water.
• The low land that runs between mountains or hills.
• A body of flowing water that empties into an ocean, valley, lake or river.

Match the description of the landform to the name of the landform: valley

• A body of flowing water that empties into an ocean, valley, lake or river.
• The low land that runs between mountains or hills.
• A part of the earth’s crust that has been raised high above the
    surrounding lowlands.
• A hill or ridge of loose sand formed by the wind.

Match the description of the landform to the name of the landform: mountain

• A body of flowing water that empties into an ocean, valley, lake or river.
• The low land that runs between mountains or hills.
• A part of the earth’s crust that has been raised high above the
    surrounding lowlands.
• A hill or ridge of loose sand formed by the wind.

Which river part is a result of deposition?

• source
• delta

Larger sand grains are carried by moving water more easily than smaller sand grains.

• true
• false

Wind-blown sand can make rocks smoother.

• true
• false

Sand dunes can only form in the desert.

• true 
• false

Which of the following are ways to prevent the erosion of sand dunes? 

• Remove vegetation from the dunes.
• Put up a fence to block the wind.
• Install wind turbines.
• Dig the sand from the ground.