Download key - Rocks and MInerals - What do you already know

Key Rocks and Minerals – What do you know so far?
Without using any materials, answer the following questions to the best of your ability. This will no tbe
counted as a grade. Just do the best you can.
1. Alex is investigating minerals,. She needs to test the property of STREAK. Explain how she should test
this property.
Alex should rub the mineral across an unglazed porcelain tile. The color of the powder
left behind is called the streak of the mineral.
2. Adam, Suzy’s lab partner, is also identifying minerals. He is in charge of testing the property “how it
breaks”. Explain how he should test this property.
Adam should observe the mineral carefully.
Answer the following questions using the Moh’s Hardness Scale.
3. Which mineral is harder, topaz or quartz?
Topaz
4. Based on the Moh’s hardness scale, which mineral
could apatite scratch? (Circle the correct answer)
Calcite
Quartz
Diamond
Topaz
5. You have a mineral that can be scratched with a penny, but not your fingernail. What mineral could you
have? Calcite
6. Name two properties of minerals.
Streak and
hardness
7. John has a rock that he is trying to identify. This rock has nice big whit and black crystals. It is coarse
grained. What rock type does John have? Igneous
8. Ellie has a rock that she is trying to identify. This rock is made up of rounded pebbles and sand. What
type does Ellie have? Sedimentary
9. In one sentence, describe what the process of cementation is.
Cementation is the gluing of the sediments together in a sedimentary rock.
Use the following picture of the rock cycle to answer questions 10-12.
10. How does an Igneous rock become a metamorphic
rock?
An igneous rock must first be weathered and eroded into
sediments. Next the sediments must compact and
cement together to form a sedimentary rock. Last the
sedimentary rock must have heat and pressure applied to
it to form a metamorphic rock.
11. How does a Metamorphic rock become a sedimentary
rock?
A metamorphic rock needs to weather and erode into
sediments. Then the sediments must compact and cement
together to form a sedimentary rock.
12. How does a Sedimentary rock become an Igneous
rock?
A sedimentary rock must go under extreme heat and pressure to form a metamorphic rock. The
metamorphic rock must have more heat applied to it to form magma. The magma must cool to form an
igneous rock.
13. Name the two process necessary to form a sedimentary rock.
Compaction and Cementation
14. Nicole is completing her metamorphic rock lab. She can’t remember what the term “foliated” means.
Explain to Nicole what it means when a metamorphic rock is “foliated”.
Foliated means that the crystals are in layers or bands.
15. James is working on the Igneous rock lab. He must classify the igneous rocks by texture. What terms
might he use to accurately describe the texture of Igneous rocks? How would you use these terms?
James need to use the terms fine grained or coarse grained. He would use the terms in describing
whether the rocks cooled slowly or quickly.
16. What type of sedimentary rock forms from the remains of plants and animals? Organic
17. What type of igneous forms from lava? Extrusive
Magma? Intrusive
18. What is the name of the process by which sediment is laid down after it is dropped by the water or
wind carrying it? Deposition
19. When we classify Igneous rocks, we use the term “grains”. When we classify sedimentary rocks, we use
the term Clastic.
20. What type of Sedimentary rock forms when dissolved minerals in solution crystallize? Chemical