7th grade science: Unit 9

1.

1 point

What would cause mountains to become shorter over time?

rain and wind

heat and pressure

river formation

soil deposition

2.

1 point

If a tree grows through bedrock and the roots of the tree split the rock what is that caused by?

erosion

mechanical weathering

deposition

chemical weathering

3.

1 point

An old house is torn down. Small weeds and grasses grow over the vacant lot. Over the next few years, bushes and tree seedlings begin to grow. Which of the following would probably happen next

lichens and mosses grow on bare rock

a volcano will erupt

larger trees grow and larger animals move into the area

it will stay this way unless disturbed

4.

1 point

Chemical weathing is different than mechanical weathering because it

moves the rocks from one place to another

makes new landforms

breaks down rock

changes the composition of the rock

5.

1 point

The four main factors of erosion are

wind, water, ice, gravity

living things, volcanoes, wind, plants

plants, animals, sand, mud

volcanoes, earthquakes, animals, wind

6.

1 point

Which biome is likely to be most affected by erosion caused by WIND?

tropical rainforest

temperate rainforest

desert

temperate deciduous forest

7.

1 point

A volcanic eruption adds a large amount of lava along with other things to the environment. This balances out deposition with which of the following forces?

weathering

gravity

erosion

fossilization

8.

1 point

After a pond is filled in, the area will go through a series of stages of succession. After 100s of years, what will happen to the pond?

lichens and mosses will be the only thing growing

small shrubs and grasses will be growing in the pond

there will be no plants growing in the ecosystem

the ecosystem will be a climax community with many species

9.

1 point

In 2009 Galveston was hit by Hurricane Ike. What effects would you expect to see following the natural disaster?

loss of beach sand

inland flooding

destroyed plants

all of the above

10.

1 point

Which of the following landforms is NOT caused by deposition?

sand dunes

cave

beach

delta

11.

1 point

Areas that experience great numbers of earthquakes also have volcanoes. Why do these areas have both EARTHQUAKES and VOLCANOES?

both earthquakes and volcanoes are caused by shaking of the Earth's core

both earthquakes and volcanoes are caused by moving Earth

both earthquakes and volcanoes are caused by bad weather

both earthquakes and volcanoes are caused by cracks in the Earth

12.

1 point

Which of the following is MOST RESPONSIBLE for the formation of underground limestone caves?

erosion of the limestone by water

fracturing of the limestone by earthquakes

weathering of limestone by wind

melting of the limestone by lava flow

13.

1 point

Severe tropical cyclone usually with heavy rains and winds

earthquake

volcano

hurricane

tsunamis

tornado

14.

1 point

A very large ocean wave caused by plate tectonics and/or volcanic eruptions

earthquake

volcano

hurricane

tsunamis

tornado

15.

1 point

The shaking of Earth’s surface caused by movement along a fault

earthquake

volcano

hurricane

tsunamis

tornado

16.

1 point

Where a cold and warm front meet that forms a funnel-shaped extension of a cloud

earthquake

volcano

hurricane

tsunamis

tornado

17.

1 point

Opening in a Earth’s surface or crust, which allows hot magma, volcanic ash and gases to escape from below the surface

earthquake

volcano

hurricane

tsunamis

tornado