What percent of Earth's water is saltwater?

• 77%

• 87%

• 97%

• 67%

Tags

NGSS.MS-ESS2-4

When water slowly rises, and covers the land twice a day on an ocean shoreline, this is called

• wave

• current

• stream

• tide

How many tides do most places have in a day?

• 4 tides
• 2 tides
• 1 tide
• 3 tides

How are tides caused?

• rotation of earth

• rotation of earth and gravitational pull of the sun and moon

• gravitiational pull of the sun

• waves

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

A rhythmic movement that carries energy through matter or spaces is known as

• wave
• tide
• current
• stream

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A crest on a wave is the

• it's the high tide

• lowest point

• in between point

• it's the highest point

Tags

NGSS.MS-PS4-1

A trough on a wave is the

• in between point

• highest point

• lowest point

• it's the low tide

Moving streams of water within the ocean are

• waves

• currents

• tides

• streams

Tags

NGSS.MS-ESS2-6

Currents that move on or near the surface of the ocean are

• surface currents
• deep currents
• both surface and deep currents
• currents don't move on the surface

Tags

NGSS.MS-ESS2-6

Density of water moves the water current and this is known as

• wind current

• surface current

• a mixture of currents

• deep current

Tags

NGSS.MS-ESS2-6