Waves, Currents, & Tides

What is the lowest point of a wave called?

• crest
• trough
• breaker
• peak

At low tide there is _____.

• less beach
• more water
• higher water
• more beach

How are waves, tides, and currents alike?

• Always moving, affect the shape of the shoreline
• Affect the shape of the shoreline & are caused by wind
• Affect the shape of the shoreline & are caused by tsunamis
• Always moving & affected by gravity

Tags

NGSS.MS-PS4-1

NGSS.MS-ESS2-6

Surface currents...

• occur below the surface of the water.
• occur above the surface of the water.
• occur on the surface of the water.
• All of the above.

Tags

NGSS.MS-ESS2-6

What is the highest point of a wave called?

• the top
• peak
• crest
• trough

What is the distance from the crest of one wave to the crest of another?

• current
• peak
• wave height
• wave length

What is the distance from the trough of the wave to the crest?

• peak
• wave length
• wave height
• trough

Density currents are caused by...

• density differences caused by temperature & salinity. 
• changes in wind directions.
• prevailing winds.

Longshore currents flow...

• in a zig zag pattern.
• parallel to the shoreline.
• vertically to the shoreline.

____________are caused by the moon’s gravitational pull on the Earth.

• Tides

• Breaker

• Through

• Current

Tags

NGSS.MS-ESS1-1