humanities (term1)

When the rock is repeatedly heated and cooled.the outer layer expands

• Freeze-thaw

• Biological

• Chemical

• Onion skin

(a)   is when water current breaks rocks

Explain v-shaped valley

(a)   is the highest water fall

Answer explanation

In south America

At the bottom of a cliff a (a)   is formed .

Answer explanation

The water works away softer rock

A _____ is a valley with almost verticle sides that has been carved out by a river or waterfall

• Plunge pool

• Gorge

• Tributaries

(a)   are small river/streams that join to the main river

Answer explanation

The places where ______ and the main river meets are called confluence

The three courses are (a)   (from top to down)

Answer explanation

(a)   are the turns/curves the river takes

Whe the loop/meanders become noticeable the river connects and takes away the meanders creating a (a)   lake.

Answer explanation

It eventually dries up