Water Skills Assessment for Grade 7

What causes tides in the ocean?

• Underwater volcanoes

• Wind patterns

• Ocean currents

• Gravitational forces of the Moon and the Sun

Explain the difference between spring tides and neap tides.

• Spring tides have higher high tides and lower low tides, while neap tides have lower high tides and higher low tides.

• Spring tides have lower high tides and higher low tides, while neap tides have higher high tides and lower low tides.

• Spring tides are caused by the moon, while neap tides are caused by the sun.

• Spring tides occur in the fall, while neap tides occur in the spring.

How do ocean currents affect the climate of coastal regions?

• Ocean currents have no impact on the climate of coastal regions

• Ocean currents affect the climate of coastal regions by transferring heat and influencing temperature and precipitation patterns.

• Ocean currents cause extreme weather events in coastal regions

• Ocean currents lead to a decrease in sea levels along the coast

Describe the movement of waves in the ocean.

• Waves in the ocean move in a straight line from one point to another

• Waves in the ocean are created by the wind transferring energy to the water's surface, causing the water to move in an orbital path as the wave passes through.

• Waves in the ocean are stationary and do not move

• Waves in the ocean are caused by the gravitational pull of the moon

What factors influence the size and speed of ocean waves?

• Wind speed, wind duration, and fetch

• Water temperature, water depth, and moon phase

• Ocean currents, water salinity, and air pressure

• Tide height, water clarity, and underwater topography

How does the Coriolis effect impact the direction of ocean currents?

• Ocean currents flow in a straight line due to the Coriolis effect.

• Ocean currents reverse direction because of the Coriolis effect.

• Ocean currents are deflected due to the Coriolis effect.

• The Coriolis effect has no impact on ocean currents.

Why do some regions experience stronger tides than others?

• The color of the water in the area

• The presence of marine life in the region

• Factors such as the shape of the coastline, underwater topography, and the Earth's rotation.

• The number of boats in the vicinity

What role do ocean currents play in the distribution of marine life?

• Ocean currents have no impact on the distribution of marine life.

• Ocean currents only transport marine life within the same region.

• Ocean currents transport nutrients, larvae, and organisms to different regions, creating diverse habitats and ecosystems.

• Ocean currents create barriers that prevent marine life from migrating to new areas.

How are tides important for navigation in the ocean?

• Tides always flow in the same direction, making navigation predictable

• Tides affect water levels, making navigation easier or harder by influencing currents and depth.

• Tides have no impact on navigation in the ocean

• Tides only affect small boats, not larger vessels

Explain the concept of upwelling and its significance in marine ecosystems.

• Upwelling is only relevant for freshwater ecosystems

• Upwelling leads to a decrease in marine biodiversity

• Upwelling has no impact on marine ecosystems

• Upwelling is crucial for marine ecosystems as it enhances biological productivity, supports diverse marine life, and contributes to the overall health of the ocean ecosystem.