Weathering

Question 1

what is weathering

Answer 1

wearing away of rocks and soil

Question 2

what does weathering affect

Answer 2

shape and composition of rocks and soil

Question 3

what are agents

Answer 3

natural forces that cause an effect or result

Question 4

what are three types of weathering

Answer 4

physical weathering, chemical weathering and biological weathering

Question 5

whats physicals weathering

Answer 5

physical forces such as frost and temperature change

Question 6

what is chemical weathering

Answer 6

chemical changes that weaken rocks

Question 7

what is biological weathering

Answer 7

action of plants and animals

Question 8

what are two examples of physical weathering?

Answer 8

freeze that and exfoliation

Question 9

what is exfoliation

Answer 9

the removal of the outer layer of a rock

Question 10

when does river erosion happen

Answer 10

when river flows over land

Question 11

explain how a waterfall forms

Answer 11

1. river flows over bands of hard and soft rocks
2. the river undercuts had rocks leaving an overhang
   3.overhang collapses into plunge pool

Question 12

what is a meander formed by

Answer 12

deposition and erosion

Question 13

how do meanders form

Answer 13

water flows faster on the outside of bend which erodes faster. deposition occurs on inside of bend where river flows slower.