Weathering
breaking down of rock into smaller pieces
what is weathering
what is erosion
moving rock or soil from one place to another
what is deposition
dropping or setting of sediments
what is the slowest type of Earth change: erosion, weathering, or earthquakes
weathering
Q: What is a fast change that can shake the ground?
A: An earthquake.
Which can cause weathering: wind, plants, or temperature?
all of them
name one force of erosion
wind, water, ice, or gravity
what landform is created when a river drops sediment at its mouth
a delta
Q: Sand dunes changing shape over time is caused by what?
A: Wind erosion.
Q: What fast change happens when melted rock comes out of a volcano?
A: An eruption.
true or false: weathering moves rocks from one place to another
false-it breaks them down but does not move them
a river carrying sand downstream is an example of what?
water erosion
where does sand go when waves deposit it
beaches
Q: What slow-moving ice form can carve out valleys?
A: Glaciers.
Q: What causes landslides?
A: Gravity pulling rocks and soil downhill.
name two causes of chemical weathering
water, oxygen carrying iron
what type of erosion happens when glaciers pick up rocks as they move?
ice erosion
true or false: deposition can build new land
true
Q: Rivers carving canyons over millions of years is an example of what?
A: Erosion.
Q: What fast-moving event can wash away homes and trees after heavy rain?
A: A flood.
This huge canyon in Arizona was carved slowly over millions of years by the Colorado River.
Answer: The Grand Canyon.
what human activity can increase erosion?
cutting down trees / removing plants
what usually happens right before deposition
erosion
Q: What slowly forms caves inside limestone rock?
A: Chemical weathering.
Q: True or False: Tornadoes and hurricanes can quickly change Earth’s surface.
A: True.