2._____ clouds form at heights of 2,000 meters or less.
A.Cumulus
B.Cirrus
C.Cirrostratus
D.Altocumulus
Erosion caused by waves can destroy ____.
A.Rocky shorelines
B.Sandy shorelines
C.Beaches
D.All of the above
The horizontal distance between the highest or the lowest points of two successive waves is the _____.
A.Crest
B.Tidal range
C.Trough
D.Wavelength
When the top of a wave moves faster than the bottom of a wave,the wave collapses,forming a(n) _____.
A.Trough
B.Upwelling
C.Breaker
D.Density current
To answer multiple-choice questions, we need to read and understand each option and then eliminate the incorrect ones.
1. _____ clouds form at heights of 2,000 meters or less.
A. Cumulus
B. Cirrus
C. Cirrostratus
D. Altocumulus
To answer this question, we need to know which type(s) of clouds form at heights of 2,000 meters or less.
- The cloud type "Cumulus" is typically found at lower altitudes and is known for its vertical development, resembling fluffy cotton balls.
- "Cirrus" clouds are high-level clouds that occur at altitudes above 6,000 meters and have a wispy appearance.
- "Cirrostratus" clouds are also high-level clouds but form a transparent veil covering the sky, usually ahead of approaching storms.
- "Altocumulus" clouds are mid-level clouds that form between 2,000 to 6,000 meters.
From the given options, "Altocumulus" is the only cloud type that can form at heights of 2,000 meters or less. So the correct answer is Option D.
2. Erosion caused by waves can destroy ____.
A. Rocky shorelines
B. Sandy shorelines
C. Beaches
D. All of the above
This question asks about the effects of wave erosion on different types of shorelines.
- Waves crashing against "rocky shorelines" can erode and break down the rocky formations over time.
- "Sandy shorelines" are vulnerable to erosion as the waves can shift and remove the sand from the beaches.
- "Beaches" are primarily composed of sand or pebbles, and they can be eroded by powerful waves.
Therefore, all the options listed can be affected by wave erosion, so the correct answer is Option D.
3. The horizontal distance between the highest or the lowest points of two successive waves is the _____.
A. Crest
B. Tidal range
C. Trough
D. Wavelength
The question asks for the term that represents the horizontal distance between the highest and lowest points of two successive waves.
- The "crest" of a wave is the highest point.
- The "tidal range" refers to the vertical difference between the highest and lowest tide levels.
- The "trough" of a wave is the lowest point.
- The "wavelength" is the horizontal distance between two consecutive crests or troughs.
From the given options, the correct answer is Option D, wavelength.
4. When the top of a wave moves faster than the bottom of a wave, the wave collapses, forming a(n) _____.
A. Trough
B. Upwelling
C. Breaker
D. Density current
The question asks for the term that describes what happens when the top of a wave moves faster than the bottom and results in a collapse.
- A "trough" is the lowest point of a wave.
- "Upwelling" refers to the vertical movement of deep, cold water to the ocean's surface.
- A "breaker" is a collapsing wave as it approaches shallow water or encounters an obstruction.
- A "density current" is the movement of water caused by differences in density, temperature, or salinity.
From the given options, the correct answer is Option C, breaker.