6th Grade Earth Science Exam

All of the following numbers represent weathering & erosion except?

_______ is the name of the soil layer you find the most humus?

Plate tectonics is a theory that combines which two ideas? 

Which of the following were NOT used to support the continental drift theory?

According to the graph,what type of rocks are pumice, rhyolite and granite? 

Wegner’s ideas about continental drift were controversial.  Why didn’t people believe him?

Which number(s) represent heat & pressure

Which earth process results from this type of boundary?

What kind of weathering causes the mineral composition of rocks to change?

According to the graph, which type of volcanic rock will flow the easiest?

Mechanical weathering occurs at a greater rate in climates that are... 

_______ and ______ are examples of mass movement.

What did scientist discover on the ocean floor to help provide evidence of seafloor spreading?

What is the driving force for the movement of the lithospheric plates?

The following illustration shows which type of boundary?

Which is NOT one of the clues Wegner used to support his hypothesis of continental drift.

_______ is this the name of the soil layer that is made up of partially weathered rock.

What causes convection?

Which of the following are types of mechanical weathering?

What is the main difference between chemical and physical weathering?

 6. The most important factors in determining the rate of weathering are…

A type of mechanical weathering in which sediment strikes rock and the surface gets worn away.

What term best describes the management of soil to prevent its destruction.

Which of the following factors would increase the rate of weathering?

________ deposited till over much of North America,which now gives us nutrient soil.

Which of the following is NOT a benefit of soil?

The following illustration shows which type of boundary?

A rock with iron goes crumbly and turns red-brown color.The process of __ has impacted it.

The following illustration shows which type of boundary?

A rock containing iron has been chemically weathered by oxygen and water in a process called...

What do scientist use to map the ocean floor?

What occurs when an oceanic plate converges with a continental plate.

The hypothesis that Wegner suggested, claiming the continents were joined together in the past

If you drop a piece of chalk in vinegar, the chalk will eventually dissolve.  Example of____

Harry Hess suggested an explanation as to how the continents were moving, the name is

The most important factors in determining the rate of weathering are _____.

According to the graph….

 Living organisms in soil help to…

What was the reason no one believed Alfred Wegner’s hypothesis? 

Layer of soil that contains fine soil particles & minerals from leeching, little organic matter

The decayed plant and animal material in soil is called ______.

9. What term describes the management of soil to prevent its destruction?

 earthworms, fungi and bacteria decompose the organic matter and add to the formation of…  

Which of water’s properties directly cause mechanical weathering?

According to the graph, which rock took the longest to cool and has the largest crystals? 

Which number(s) represents compaction & cementation?

What was the name of the hypothesis that Alfred Wegener proposed?

Sediment is classified according to its particle______.

The crust and the uppermost mantle make up the rigid outer layer of the Earth called the _____.

Ice wedging causes mechanical weathering of rock by…

Which number(s) best represent cooling?

The invention of sonar helped find the mid-ocean ridge, this led Harry Hess to develop a theory

_______ is the name of the soil layer that is solid rock.

To prevent erosion on steep slopes, people can_____.

The movement by wind, water, glaciers or gravity of soil from one place to another is called...

Which of the following are agents of Erosion?

5. A______  and ______ climate causes  chemical weathering to occur rapidly.  

If you increase the surface area of a rock, how will it affect the rate of weathering?

Which number(s) best represents melting?

Which earth process results from this type of boundary?

Which of the following statements about weathering is false?

What type of weathering causes the mineral composition of rocks to change?

The dropping of sediments by any agent of erosion is called  _____.

What is Pangaea?