Topic 4: Earth's Systems and Resources

What occurs at convergent plate boundaries?

• Seafloor spreading

• Formation of mountains and island arcs

• Only transform faults

• Horizontal plate movement

Answer explanation

At convergent plate boundaries, tectonic plates collide, leading to the formation of mountains and island arcs. This process is distinct from seafloor spreading, transform faults, and horizontal movement.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

The atmosphere layer where most weather phenomena occur is the:

• Mesosphere

• Stratosphere

• Troposphere

• Thermosphere

Answer explanation

The troposphere is the lowest layer of the atmosphere, where most weather phenomena, such as clouds, rain, and storms, occur. It extends from the Earth's surface up to about 8-15 kilometers high.

Tags

NGSS.MS-ESS2-5

Which factor primarily determines soil water holding capacity?

• Parent material only

• Soil temperature

• Geographic location

• Particle size and composition

Answer explanation

Soil water holding capacity is primarily influenced by particle size and composition. Smaller particles, like clay, hold more water than larger particles, such as sand, due to their greater surface area and ability to retain moisture.

Global wind patterns are primarily caused by:

• The Coriolis effect and equatorial solar radiation

• Atmospheric pressure only

• Ocean currents

• Mountain ranges

Answer explanation

Global wind patterns are primarily influenced by the Coriolis effect, which results from the Earth's rotation, and equatorial solar radiation, which drives temperature differences. This combination creates prevailing wind patterns.

Tags

NGSS.MS-ESS2-6

What determines the intensity of solar radiation at Earth's surface?

• Distance from the equator

• Ocean temperatures

• Angle of sun's rays

• Cloud cover

Answer explanation

The intensity of solar radiation at Earth's surface is primarily determined by the angle of the sun's rays. When the sun is higher in the sky, its rays hit the surface more directly, increasing intensity.

A watershed's characteristics include all EXCEPT:

• Atmospheric pressure

• Area and length

• Vegetation types

• Slope

Answer explanation

A watershed's characteristics include area, length, vegetation types, and slope, which influence water flow and ecosystem health. Atmospheric pressure, however, is not a defining characteristic of a watershed.

The process by which parent material becomes soil involves:

• Compression only

• Chemical reactions only

• Weathering and transport

• Volcanic activity

Answer explanation

The formation of soil from parent material primarily involves weathering, which breaks down rocks, and transport, which moves the materials. This process is essential for creating the diverse soils we see today.

Tags

NGSS.MS-ESS2-2

During El Niño events:

• Pacific Ocean temperatures decrease

• Global weather patterns remain stable

• Pacific Ocean temperatures increase

• Only local effects occur

Answer explanation

During El Niño events, the Pacific Ocean experiences an increase in temperatures due to the shifting of warm water. This disrupts global weather patterns, making 'Pacific Ocean temperatures increase' the correct choice.

Tags

NGSS.MS-ESS2-6

Rain shadows are formed when:

• Ocean currents shift

• High elevation areas block precipitation

• Temperatures suddenly drop

• Wind patterns change direction

Answer explanation

Rain shadows occur when high elevation areas, like mountains, block moist air from reaching the leeward side, causing precipitation to fall on the windward side and leaving the other side dry.

Soil horizons are primarily categorized by:

• Water content only

• Composition and organic material

• Color only

• Temperature

Answer explanation

Soil horizons are primarily categorized by their composition and organic material, which influence soil properties and fertility. Other factors like water content, color, and temperature are important but not the main criteria for classification.