ICAS Earth and Environmental Science 2

Question 1

Which layer of Earth's atmosphere contains the ozone layer that protects life from harmful ultraviolet radiation?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 2

What process causes rocks to break down into smaller pieces through physical means without changing their chemical composition?

Accepted Answer

Mechanical weathering

Answer

Chemical weathering

Answer

Erosion

Answer

Deposition

Question 3

Which type of rock forms when magma cools and solidifies underground?

Accepted Answer

Intrusive igneous

Answer

Sedimentary

Answer

Metamorphic

Answer

Extrusive igneous

Question 4

What is the main driver of ocean surface currents?

Accepted Answer

Wind blowing across the ocean surface

Answer

Differences in water temperature only

Answer

Tidal forces from the Moon

Answer

Underwater earthquakes

Question 5

Which greenhouse gas is produced in the largest quantity by human agricultural practices, particularly from livestock and rice paddies?

Accepted Answer

Methane (CH₄)

Answer

Carbon dioxide (CO₂)

Answer

Nitrous oxide (N₂O)

Answer

Water vapor (H₂O)

Question 6

What term describes the gradual movement of continents over millions of years due to the motion of tectonic plates?

Accepted Answer

Continental drift

Answer

Seafloor spreading

Answer

Subduction

Answer

Isostasy

Question 7

Which of the following best describes a renewable resource?

Accepted Answer

Solar energy that is continuously replenished

Answer

Coal formed over millions of years

Answer

Natural gas trapped in shale

Answer

Uranium used in nuclear reactors