8C.1 - The Rock Cycle Halfway Review

Instructions:

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2. Answer all questions

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1) Are all rocks the same age?

2) Where are the oldest rocks found?

3) Where are the youngest rocks on the earth generally found?

4) Why has the amount of rock material on the earth remained fairly constant since its formation?

5) What materials are new rocks made from?

6) What type of rocks are formed when molten rock freezes?

7) Describe the structure of particles in an igneous rock

8) Solids are made up of crystals. What are crystals?

9) How does the rate at which something freezes affect the size of the crystals it contains?

10) Why are the crystals formed larger when an object freezes more slowly?

11) Why are the crystals formed smaller when an object freezes quickly?

12) What size crystals are formed when solids freeze slowly?

13) What is the impact on the structure of an igneous rock when it forms slowly under the ground?

14) What is the impact on the structure of an igneous rock when it forms above the ground or in water, resulting in tit cooling rapidly?

15) Does the size of crystals affect the properties of a rock?

16) What is weathering?

17) Over time, what happens to rocks as they are weathered?

18) What is chemical weathering?

19) What is physical weathering?

20) How are sedimentary rocks formed?

21) What may occur when organisms fall into the sediment of a forming rock?

22) What causes the formation of a metamorphic rock?

23) How do the Big Ideas link to this topic?