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Changes to Earth
Question | Answer |
---|---|
The breaking down of rocks is called: | Weathering |
What are sediments? | Tiny pieces of broken down rocks |
When sediments are moved from one place to another it is called: | Erosion |
When sediments are dropped in a new location and stack on top of each other in layers, it is called: | depoSITion |
A canyon is formed by... | Moving water (a river) |
What is a glacier? | A massive piece of ice that moves very slowly across Earth's surface |
What landform is formed by a glacier? | U-shaped Valley |
How is a sand dune formed? | Wind picks up sand sediments and drops or deposits them in a new location where they build up over time. |
What shape is a delta formed in? | A triangle |
How is a delta formed? | Where the mouth of a river meets the ocean and DEPOSITS sediments. |
How can a delta grow larger? | A river must continue to drop sediments off where the mouth of a river meets a delta. |
Describe weathering: | When large rocks BREAK down into smaller pieces called sediments. |
Explain erosion: | When wind, water or ice MOVES the sediments to a new location. |
Describe deposition: | When sediments are dropped or laid down in a new place and begin to stack on top of each other in layers. |
What does rapid mean? | Very quickly or fast |
What are three major causes of a landslide? | Heavy rains Volcanic activity Earthquakes |
What rapid change takes place when Earth's plates rub together? | Earthquake |
Is a volcano a rapid change or a slow change? | Rapid |
Water carving out the sides of a canyon wall is an example of weathering, erosion or deposition? | Weathering |
A river dropping sediments in a new location is an example of weathering, erosion or deposition? | Deposition |
Wind transporting sand sediments in the air is an example of weathering, erosion or deposition? | Erosion |