WCAS - Washington Comprehensive Assessment of Science Earth's Systems and Processes Questions and Answers

Question 1

A geologist studying the rock cycle finds a sample of shale, a sedimentary rock, that has been subjected to intense heat and pressure deep within the Earth's crust, transforming it into slate.
Which of the following geological processes is responsible for this change?

Accepted Answer

Metamorphism

Answer

Lithification

Answer

Erosion

Answer

Weathering

Question 2

At a convergent boundary where a dense oceanic plate collides with a less dense continental plate, which of the following landforms are most likely to be created?

Accepted Answer

A deep ocean trench and a volcanic mountain range

Answer

A mid-ocean ridge and a rift valley

Answer

Two volcanic island arcs parallel to each other

Answer

A transform fault with extensive lateral displacement

Question 3

Which of the following is the primary source of energy that drives the Earth's water cycle, causing evaporation and transpiration?

Accepted Answer

Solar radiation from the Sun

Answer

Geothermal heat from Earth's core

Answer

The gravitational pull of the Moon

Answer

Kinetic energy from wind and ocean currents

Question 4

A news report states, 'The average annual precipitation in the Amazon rainforest has been consistently decreasing over the past 30 years.' This statement is a description of the region's:

Accepted Answer

Climate

Answer

Tectonic activity

Answer

Daily forecast

Answer

Weather

Question 5

The ozone layer is a critical component of Earth's atmosphere that absorbs the majority of the Sun's harmful ultraviolet (UV) radiation. In which atmospheric layer is the ozone layer primarily located?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 6

Many people believe Earth is warmer during the summer because it is closer to the Sun. Which statement BEST refutes this misconception and correctly explains the primary cause of seasons?

Accepted Answer

The seasons are caused by the 23.5-degree tilt of Earth's rotational axis.

Answer

The seasons are caused by the changing speed of Earth's rotation on its axis.

Answer

The Sun produces more energy during certain times of the year, causing summer.

Answer

The seasons are caused by the Moon's gravitational pull influencing Earth's temperatures.