Sec 1 WB 8.1 Answer

Express and Normal (A)

Question 1
Valley - A low area of land between hills and mountains.
Hill - An area of high ground, usually less than 600m high. Often has gentle slopes and rounded in shape.
Mountain - An area of high ground, usually 600m high. Often has steep slopes and a narrow top or peak.
Plateau - A raised area of land with a fairly flat top and steep slopes.
Plain - A broad, low and flat area of the Earth's surface.

Question 2(a)
1) Core
2) Mantle
3) Crust
4) Plates
5) Mountain
6) Folding
7) Magma
8) Lava
9) Vulcanicity
10) Eruption
11) Volcano

Question 2(b)
A - Core
B - Mantle
C - Crust

Question 2(c)(ii)
When the temperature beneath the Earth's surface becomes too great, parts of the mantle melts. This molten mantle is known as magma.
When magma pushes its way onto the Earth's surface through cracks in the Earth's crust, it is known as lava. The outpouring of lava onto the surrounding area is called an eruption.
Over time, many layers of cooled lava result in a volcano.

Question 3(a)
Folding

Question 3(b)
The plates which make up the Earth's curst are always moving. When two plates collide into each other, some layers of rock which make up the crust buckle and form folds.

For Express students only
Question 3(c)
Fold mountains