Planet Earth Practice word

1. Planet Earth Practice word Grade: 7 Planet Earth Subject: April Date:

2. 1 What type of fossils form when bones harden into a rock-like substance? A moulds B casts C trace fossils D petrified fossils

3. 2 Anna is using a Mohs scale set of minerals to test some rock samples. Which would she find has the greatest hardness value? A quartz B feldspar C calcite D diamond

4. 3 Which of the following is not a method used to identify minerals? A Crystal shape B Hardness C Cleavage D Size

5. 4 What term describes the powdery mark left behind when a mineral is scratched along a piece of unglazed porcelain? A Colour B Luster C Streak D Residue

6. 5 Which of the following would have the best chance of being preserved? A Wings of a fly B Shell of an oyster C Skin and fur of a lion D A worm

7. 6 Which of the following minerals is the softest on the Mohs Hardness Scale? A Soapstone B Feldspar C Talc D Shale

8. 7 Which of the following is not an example of a metamorphic rock? A Schist B Gneiss C Marble D Pumice

9. 8 Pierre is working on a project about sedimentary rocks. Which of the following should he include in his project? A Granite B Limestone C Feldspar D Marble

10. 9 Which of the following terms describes the easiest way to classify a mineral? A Cleavage B Fracture C Hardness D Colour

11. 10 Rocks that break with smooth, flat edges are known to have: A Cleavage B Fracture C Clarity D Luster

12. 11 Which of the following is the best example of chemical weathering? A Frost wedging B Acid rain C Tree roots D Landslides

13. 12 Rocks that fall down a hill due to gravity is a result of: A Chemical weathering B Biological weathering C Mechanical weathering D Erosion

14. 13 A growing tree root can eventually split a rock. What is this process called? A Wind erosion B Biological weathering C Crop rotation D Desertification

15. 14 Which of the following is not a form of mechanical weathering? A Frost wedging B Gravity C Wind D Acid rain

16. 15 What are tracks, burrows, and other evidence of animal activity known as? A Moulds B Casts C Trace fossils D Original remains

17. 16 Frost wedging is caused by: A Acids freezing on rocks B Water and oxygen reacting C Water freezing and thawing D Rocks colliding with each other

18. 17 When oceanic and continental plates collide, one plate is forced under the other. What term describes the areas where these plates overlap? A Subduction zones B Conduction zones C Convection zones D Subduction zones

19. 18 What is the name of the supercontinent that formed over 200 million years ago? Hint: This supercontinent eventually broke up into the present day continents. A Pangaea B Rhodesia C Gondwanaland D Rhodinia

20. 19 When organisms are preserved, in full or part, as fossils, what are they known as? A Trace fossils B Moulds C Casts D Original remains

21. 20 Plates move apart at ____________________ boundaries. A Convergent B Stable C Divergent D Volcanic

22. 21 The layer of the earth that is the thinnest of all is the: A Inner core B Outer core C Crust D Upper mantle

23. 22 Which of the following terms is the correct definition of the visible layers we see in a section of soil? A Strata B Stratification C Layering D Soil profile

24. 23 Most earthquakes happen ____________________. A Without warning B In areas where earthquakes have occurred in the past C Along plate boundaries D All of the above

25. 24 The point in Earth's interior where the energy release of an earthquake occurs is the ____________________. A focus B epicenter C fault D hot spot

26. 25 Which term describes volcanoes that are not currently erupting? A Active B Dormant C Sleeping D Extinct

27. 26 What is the name that was given to this volcanic region that surrounds the Pacific Ocean? A Zone of fire B Area of fire C Ring of fire D Rim of fire

28. 27 If a layer of sandstone lies on top of a layer of limestone in which a 300 million_year_old fossil is found, the layer of sandstone must be ____________________. A Older than 300 million years B Younger than 300 million years C The same age as the limestone D Older than 600 million years

29. 28 Which option lists the layers of Earth's crust in order from the centre of Earth to its surface. A inner core, outer core, mantle, crust B mantle, crust, outer core, inner core C crust, outer core, inner core, mantle D crust, mantle, outer core, inner core

30. 29 Which of the following is not a type of earthquake wave? A Primary or P wave B L wave C Surface wave D Secondary or S wave

31. 30 Where does an earthquake begin within Earth? A Focus B Epicenter C Fault D Focal point

32. 31 Which of the following volcanoes has been the most active? A Mount St. Helens, Washington B Mount Vesuvius, Italy C Mount Kilauea, Hawaii D Mount Pinatubo, Philippines

33. 32 Which is more likely to be preserved as a fossil? A Bear fur B Salamander’s skin C Insect shell D Leech

34. 33 The name of the rock before it goes through the changes to become a metamorphic rock is called A Changed rock B Sedimentary rock C Parent rock D Igneous rock

35. 34 The hottest of all the layers of the earth is the A Crust B Mantle C Inner core D Outer core