Rocks, Weathering, and Erosion

How does freezing water cause the weathering of rocks?  The freezing water—

• keeps the rocks in place.
• makes the rocks last longer.
• expands cracks and breaks rocks.
• causes rocks to fall in landslides.

The process that breaks down rocks and other materials on Earth's surface is called

• Weathering
• Erosion

The process by which water, ice, wind, or gravity moves weathered rock and soil from one place to another.

• Weathering

• Erosion

Which of these is an example of erosion?

• Light shining onto a mountain.

• Rain breaking down rocks on a mountain into smaller pieces.

• Wind blowing away bits of dirt to a new place on the mountain.

• All of the above.

How do plants weather rocks?

• Plants don't weather rocks.
• When roots grow into cracks of rocks and expand the rock breaks.
• When the plant moves water from the roots to the leaves, the rock breaks.

The two main types of weathering are:

• mechanical and physical

• potential and kinetic

• chemical and physical

• potential and chemical

Pick and example of PHYSICAL weathering:

• Frost wedging

• Acid rain

• Oxidation

• Carbonic acid

Which of these would be the BEST example of chemical weathering?

• Limestone rocks dissolving in water

• Plant roots growing through concrete and splitting it

• Waves carrying sand away from a beach

• A large rock splitting into pieces because of ice

Which is an example of CHEMICAL weathering?

• Frost wedging

• Animal activity

• Plant growth

• Acid rain

Which rock is formed when melted rock cools?

• Metamorphic Rock
• Igneous Rock
• Sedimentary Rock