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

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

Transcript of Planet Earth Practice word Grade:7 Subject: Planet Earth Date: April.

Planet Earth Practice word

Grade: 7

Subject: Planet Earth

Date: April

1 What type of fossils form when bones harden into a rock-like substance?

A moulds

B casts

C trace fossils

D petrified fossils

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

3 Which of the following is not a method used to identify minerals?

A Crystal shape

B Hardness

C Cleavage

D Size

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

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

6 Which of the following minerals is the softest on the Mohs Hardness Scale?

A Soapstone

B Feldspar

C Talc

D Shale

7 Which of the following is not an example of a metamorphic rock?

A Schist

B Gneiss

C Marble

D Pumice

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

9 Which of the following terms describes the easiest way to classify a mineral?

A Cleavage

B Fracture

C Hardness

D Colour

10 Rocks that break with smooth, flat edges are known to have:

A Cleavage

B Fracture

C Clarity

D Luster

11 Which of the following is the best example of chemical weathering?

A Frost wedging

B Acid rain

C Tree roots

D Landslides

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

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

14 Which of the following is not a form of mechanical weathering?

A Frost wedging

B Gravity

C Wind

D Acid rain

15 What are tracks, burrows, and other evidence of animal activity known as?

A Moulds

B Casts

C Trace fossils

D Original remains

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

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

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

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

20 Plates move apart at ____________________ boundaries.

A Convergent

B Stable

C Divergent

D Volcanic

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

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

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

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

25 Which term describes volcanoes that are not currently erupting?

A Active

B Dormant

C Sleeping

D Extinct

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

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

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

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

30 Where does an earthquake begin within Earth?

A Focus

B Epicenter

C Fault

D Focal point

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

32 Which is more likely to be preserved as a fossil?

A Bear fur

B Salamander’s skin

C Insect shell

D Leech

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

34 The hottest of all the layers of the earth is the

A Crust

B Mantle

C Inner core

D Outer core