Slow Changes
Earth's surface can be worn away by
water, ice, temperature changes, chemicals and living things
What is a landslide?
The rapid downhill movement of a large amount of rock and soil
What are two examples of landforms?
plains, peninsulas, valleys, canyons, mountains
What is weathering?
The process that breaks rocks in Earth's crust into smaller pieces
A _______ is a break or crack in rocks where Earth's crust can move.
fault
Changes in weathering can be: fast, slow or both?
both
_________ and ______________ are important for chemical weathering.
water and warm temperatures
How do volcanoes affect the land around them?
Lava and ash from volcanic eruption shape the land around the volcano, craters may form
What three things cause physical weathering?
Plants, ice and water
What is an example of physical weathering?
weeds/plants growing in cracks, glaciers moving, water freezing in cracks (expanding), water constantly hitting rock
What are two places earthquakes can cause landslides?
close ; long
Physical weathering breaks rocks into smaller pieces; chemical weathering causes rocks to change into different materials and break down
What causes and earthquakes to happen?
The pressure on rocks caused by moving plates suddenly break the rock and cause a quick movement
What can cause a landslide to happen?
heavy rain, freezing/thawing, loose rocks giving way