Monday, February 23, 2009

Answers!

These are answers for weekend homework. I hope you're honourable enough NOT to copy the answers when you haven't done the worksheets.
Please check the answers only after you're done with the worksheets, alright?

Do corrections please!

Topical Test 7 (Weekend Homework 3)
Section A
1) D
2) C
3) A
4) B
5) C
6(a) Two (dormant and active)
(b) A volcano that has not erupted for a long time.
(c) They are located along the northwestern or southeastern part of the island [1m]
The area coincides with the Pacific ring of Fire (or) this section is where the plate boundaries lie [1m]
(d) Only half of the island under Indonesia or the international border cuts through half the island.
7(a) Areas B and D [1m]. These are the areas of low temperatures where freezing of water may take place in cracks of rocks [1m]
(b) Area A [1m]. It is an area of high temperature and low rainfall which means it is hot and dry [1m]
(c) Sahara desert (or any other hot desert)


Rock cycle
[Remember 5 points! Processes and important points underlined.]
- Magma in the mantle rises towards the Earth’s surface, which cools and solidifies to form igneous rocks.
- Weathering and erosion break down igneous, metamorphic and sedimentary rocks into sediments
- Sediments are compressed into layers of rocks called sedimentary rocks.
- With intense heat and pressure, igneous or sedimentary rocks are transformed/metamorphed into metamorphic rocks.
- As rocks sink into the mantle, the intense heat from the magma causes the rocks to melt.

You can find this Rock cycle explanation in the slides.
Study well, and smart,
ALL THE BEST FOR THE TEST!
Ms.Tan

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