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WorksheetsDPM 2
Total questions: 20
Worksheet time: 11mins
A sandbar is created when waves move sand from the coast, and drops it off in the water. What effects will deposition and erosion have on a beach? Select TWO correct answers.
Deposition will build up the surface of the beach/sandbar
Deposition will make the beach safer.
Erosion will reduce the size of the beach.
Erosion will possibly create a hazardous environment.
A wildfire wipes out a forest. How would the forest be expected to change over time?
The forest will not recover.
The forest will start to grow grass and weeds, then shrubs, and finally trees.
The forest will grow big trees before small shrubs.
The forest will erode away due to wind and water.
What impact can a hurricane have on a beach?
decrease deposition on a beach
increased erosion of the sand
decreased pollution
increase biodiversity
Which type of plants would be the first to grow back after a forest fire?
lichens and mosses
grass and weeds
young trees
mature trees
How do floods affect the ecosystem?
increase the temperature of the ecosystem
decrease photosynthesis for tall trees
decrease pollution
wash away/erode soil
How might a forest ecosystem be affected by a tornado? (select TWO)
uproot trees (knock trees down)
decrease pollution
destroy habitats
increase temperature
What is the correct order of succession immediately after a volcano knocked the trees in the forest down?
Z, X, Y, W
X, Y, Z, W
Z, Y, X, W
W, Y, X, Z
Which of the following is a change due to chemical weathering?
acids from lichens break down rock into soil
water freezes and cracks a rock
animals dig a hole into the ground
sand makes rocks smoother
Which TWO processes caused the formation?
weathering
ice wedging
erosion
volcanic activity
What type of change is ice wedging?
physical change
chemical change
both physical and chemical change
the rock doesn't change
What type of process is responsible for these cave formations?
deposition of sediment underground
a chemical change due to water and carbon dioxide (carbonic acid) dissolving limestone underground
physical change due to river erosion
physical change due to rocks breaking
What do primary and secondary succession begin with?
pioneer species
lichens
grass
climax community
Which of the following situations describes a chemical change?
water smoothing the surface of a rock
rust forming on a rock in the ocean
sand blasting the sides of a rock formation
water from a river eroding a riverbank
What is ecological succession?
a series of stages where plants and animals replace the previous plants and animals resulting in a gradual change of an area.
The process of the food web becoming less diverse.
When brand new land does not become a climax community.
The process of a climax community becoming a pioneer species.
Which of the following is a correct description of a change due to weathering, erosion, and deposition?
Chemical weathering occurs when water freezes and expands, breaking the rock into pieces.
Chemical weathering occurs when roots break the rock into pieces.
Chemical weathering occurs when carbon dioxide and water create an acid that dissolves rock.
Physical weathering occurs when water and air create rust on a rock.
What happens immediately following a forest fire?
Primary succession: lichens grow on bare rock.
Primary succession: grass and weeds grow on the bare soil.
Secondary succession: shrubs and trees grow on the bare soil.
Secondary succession: grass and weeds grow on the bare soil.
How does cutting down trees affect an ecosystem?
erosion of soil increases due to the lack of vegetation with roots to hold the soil in place.
weathering of rocks decrease due to more wind.
deposition of sand increases due to more gravity.
cutting down trees does not have an effect on the ecosystem.
How does a river delta form?
water freezes and thaws causing a rock to break.
water weathers and erodes sediment from a river bank, carries it downstream, and dumps it at the end.
wind carries sediment and drops it off near the ocean.
chemical weathering occurs at the end of the river.
What agent of erosion is responsible for creating sand dunes?
water
wind
gravity
waves
Which TWO are examples of physical/mechanical weathering?
temperature changes causing rocks to expand and contract (exfoliation)
acids from organisms break down rocks
rocks forming rust due to exposure to water and oxygen
animals digging and burrowing
