Grade 7 Earth Science Quiz

The word ".............." means the size and shape of grains in a rock.

(no caps, no full stop, no "s")

Which soil layer contains minerals leeched from the layers above?

• O horizon

• top soil

• sub soil

• C horizon

Weathering involves breaking down of rocks into smaller pieces, and transporting the pieces to other locations

• True

• False

Which weathering process involves a cycle of high and low temperature?

• Physical

• Chemical

• Biological

Select all correct answers.

What will cause igneous rock to turn into metamorphic rock?

• High temperature

• Melting and Cooling

• Weathering and Erosion

• High pressure

• Sedimentationand Compaction

Here is the order of Earth's layer from outside to inside:
Mantle -> Crust -> Outer Core -> Inner Core

• True
• False

All metals occur as elements

• True
• False

Tectonic plates are moved by ...................... current.

(no capital, no full stop)

The .............. are rocks which contain enough metals / metal compounds worth mining.

(plural form, no caps, no full stop)

Recycling to obtain metal usually spends less energy than obtaining metal from its ore.

• True
• False