1. 6th grade Earth Science Howard Middle School
Unit C Test Review
6th grade
Earth Science
Howard Middle School

2. Test Review
How do construction and farming affect the land? They usually increase erosion.
Which of the following statements about wetlands is true? Wetlands are usually rich in nutrients.
Which is the best definition of weathering? Cracking of rocks from wind, water, plants, or animals.

3. What is the elevation at Point X?
Which side of Oak Hill has the most gradual slope?
Where would you expect to find the most fertile soil? At the mouth of a river. (Explain your answer!)

4. Test Review
Which earth process typically follows erosion? Deposition (Be able to explain your answer!)
Erosion is followed by deposition because the sediments carried by water eventually settle out when the water slows down.

5. Look at the following data for rainfall for a five-year period.
What is the mean rainfall for the time period?
What is the median rainfall for the time period?
What is the mode rainfall for the time period?

6. Draw a bar graph of the rainfall for 2000-2004 from the table
Draw a bar graph of the rainfall for from the table. Place “Year” on the horizontal axis and “Rainfall (cm)” on the vertical axis.
Data
Example

7. The diagram shows a river flowing through a wide plain
The diagram shows a river flowing through a wide plain. The plain is covered with several layers of soil and sediment.
a. Write one reason why this plain is a good place for farming. You can mention that the soil is fertile, that the river provides water, that there is plenty of space or flat land.
b. Write one reason why this plain is not a good place for farming. Flooding or erosion.

8. Short Answer
A cliff at the ocean and a hillside away from the ocean are made of the same soil and rock material. Which place is likely to erode faster? Why? The ocean is more likely to erode faster because the large amount of energy transported by ocean waves is much greater than the erosion force of rain on the hillside.

9. Short Answer
Name two land formations that are produced as a direct result of erosion. Canyon, valley, channel, rounded hilltop, caves, sea arch, or stack.
Name two land formations that are produced as a direct result of deposition. Sand dune, beach, and delta.