Constructive/Destructive Forces & Matter

The Sahara Desert in Africa has a landscape of huge sand dunes. This landscape is constantly changing.  Which force in nature causes this constant change of the desert landscape? 

• earthquakes
• hurricanes
• lightning strikes
• wind storms

Which landforms are a result of deposition? 

• beaches and river deltas
• trenches and valley
• bays and peninsulas
• plateaus and mesas

The shape of a river changes over many years. Some rivers develop many twists and turns. Which would cause a river to develop twists and turns? 

• The temperature of the water has changed.
• The spring temperatures melt the ice covering the river.
• The city builds a bridge over the river.
• The river deposits rocks and soil along the riverbed.

Which of the following is being described here: Tidal currents make small deposits at the mouth of a river? 

• deltas
• weathering
• submerged coasts
• glacial retreat

Your teacher tells you to bring an item to class that shows evidence of erosion. Which of the following would be the BEST to bring? 

• a piece of lava from a volcanic area
• a crystal from the inside of a geode
• a piece of slate from a slate quarry
• a round rock from a streambed

Which surface feature shows how Earth's surface has been changed by fast-moving water? 

• earthquake
• canyon
• volcano
• freshwater lake

The Grand Canyon is a result of which of these destructive processes?

• earthquake
• erosion
• tornadoes
• volcanoes

Which solution helps to control floods? 

• seismological studies
• building bridges over rivers that flood
• building control dams and levees
• creating deltas at the end of rivers that flood

A river flows past several small towns. It has been decided that a dam will be built on the river. How will the dam benefit the towns along the river? 

• It will allow the towns to control flooding along the river.
• It will increase the fish population along the river.
• Water will be available for home heating.
• Water in the river will be much cleaner from the dam.

How could human intervention decrease the destructive force of hurricanes on coastal areas?

• create levees to control water flow
• research the impact of organisms in the Mississippi Delta region
• study storm drain management in the South American rain forests
• assess the effects of seismological activity on metropolitan areas