🌧️ Erosion & Fair Tests
Water runs down a steep hill faster than a flat field.
This usually causes this to increase.
What is erosion?
Plant roots help prevent erosion because they do this to soil.
What is hold it in place?
This layer is usually the oldest.
What is the bottom layer?
Volcanoes and earthquakes usually happen here.
What are plate boundaries?
Deep-rooted vegetation helps prevent this natural hazard.
What are landslides?
If students change the slope AND the amount of water in an experiment, the test is not this.
What is a fair test?
Which would erode faster: bare soil or grass-covered soil?
What is bare soil?
If you find fish fossils in a layer, the area was likely this.
What is underwater?
The Pacific Ocean has many volcanoes because it is part of this.
What is the Ring of Fire?
Concrete retaining walls are designed to do this.
What is hold back soil?
In an erosion test, what is the students changing if students change the steepness of the land?
What is the slope (steepness)?
Why does mulch reduce erosion?
What is it covers soil and slows water?
If dinosaur fossils are above shell fossils, what changed?
What is the area changed from ocean to land?
What causes earthquakes?
What is moving tectonic plates?
Terracing helps reduce landslides by doing this to water.
What is slowing it down?
If all trays have the same soil, same water, and same size — what is being controlled?
What is soil, water, size?
A farmer removes all plants from a steep hill.
Predict what will happen during heavy rain. Using scientific vocab.
What is erosion will increase?
Marine fossils in one layer and plant roots in the next layer show this type of change.
What is environmental change?
If a city is located near a plate boundary, what is more likely to occur?
What are earthquakes or volcanoes?
If two designs stop slides, but one is cheaper and better for the environment, which is better overall?
What is the safer and more environmentally friendly design?
A flat surface lost 3 g of soil. A steep slope lost 22 g.
State the pattern in one sentence using the vocabulary slope and erosion.
What is: As slope increases, erosion increases?
Grass lost 6 g of soil. Mulch lost 10 g. Bare soil lost 28 g.
Which is most effective AND why?
What is grass because it lost the least soil?
Explain why scientists can use fossils to learn about past environments.
What is fossils show what lived there and what the environment was like?
Why are volcanoes and earthquakes often found in the same places?
What is both are caused by plate movement?
Why might a retaining wall cause problems in another area?
What is it can redirect water and increase erosion elsewhere?