Processes of erosion and weathering

Question 1

What is weathering?

Answer 1

Weathering is when rocks are broken down where they are. It doesn’t move the rock – just breaks it up.

Question 2

what happens in physical weathering?

Answer 2

Rocks break apart from things like freeze-thaw (water freezes in cracks, expands, and breaks the rock).

Question 3

Types of weathering

Answer 3

physical
Chemical
Biological

Question 4

what happens in chemical weathering?

Answer 4

Rainwater (which is slightly acidic) dissolves rock, especially limestone

Question 5

what happens in biological weathering?

Answer 5

Plants or animals break rocks (e.g. roots growing in cracks).

Question 6

Processes of erosion

Answer 6

Hydraulic action – Water forces air into cracks, breaking the rock apart.

Abrasion – Rocks carried by water drag and wear away the riverbanks or coast.

Attrition – Rocks and pebbles hit each other and break into smaller, smoother pieces.

Solution – Some rocks dissolve in water (especially chalk and limestone).

Question 7

what’s 🌊 Erosion

Answer 7

Erosion is when rock or soil gets worn away and then moved somewhere else by water, wind, or ice

Question 8

what happens in Hydraulic action?

Answer 8

water bashes into the rocks

Water forces air into cracks, breaking the rock apart.

Question 9

what happens in abrasion?

Answer 9

Pebbles and rocks in the water rub and scrape against the riverbed or cliffs like sandpaper, slowly wearing them away

Question 10

what happens in attrition?

Answer 10

Rocks and pebbles hit each other and break into smaller, smoother pieces.

Question 11

what happens in attrition (erosion)?

Answer 11

Rocks in the water crash into each other, breaking into smaller, smoother pieces.

Question 12

solution erosion

Answer 12

Some rocks (like chalk or limestone) dissolve in water, especially if it’s slightly acidic.