1. Earth Materials Practice 1. Click to view the question. 2. Think about the answer. 3. Click to view the answer. 4. Click to view the next question. HAPPY STUDYING!

2. What is a rock? An earth material that is a mixture of several ingredients, called minerals

3. What is a mineral? An ingredient of a rock that cannot be broken down any further

4. What is a crystal? A material that is left when water is evaporated from a mixture

5. What is the diameter of a rock? A measurement of size that stretches the length of a rock, across the center

6. What is the depth of a rock? A measurement of size that tells how thick it is

7. What is the circumference of a rock? A measurement of size that tells the distance in a circle, around a rock

8. What are properties that someone could use to identify a rock? Size, color, luster, shape, hardness, and texture

9. ‘Cube’ or ‘rounded’ are examples of what mineral property? shape

10. ‘Metallic’ or ‘dull’ are examples of what mineral property? luster

11. ‘Striped’ or ‘green’ are examples of what mineral property? color

12. ‘Volcano’ or ‘desert’ are examples of what mineral property? location

13. ‘4 cm’ or ‘8 g’ are examples of what mineral property? size

14. ‘Sharp’ or ‘smooth’ are examples of what mineral property? texture

15. How can you tell the hardness of a rock? Perform a scratch test or scrape it with something

16. How can you tell if a rock contains calcite? Put it in vinegar and see if it bubbles

17. What is the difference between a rock and a mineral? A rock is made up of several minerals and a mineral is the same substance throughout

18. How is a mock rock like a real rock? Both are made up of ingredients that give them their special properties

19. How does evaporation help you study mock rocks? It helps separate the parts of a rock.

20. How did mixing mock rocks with water help you learn more about them? It helped to separate the ingredients and evaporated the water into crystals.

21. Name a job that involves working with earth materials. Geologist, teacher, paleontologist, seismologist, archaeologist

22. Name 3 tools that you used in class to work with earth materials. Pick, nail, tape measure, ruler, magnifying glass, penny, paper clip, vinegar, vial, evaporating dish, fingernail, water

23. THE END! Go back to the beginning to practice again!