Unit 15 Lesson 8 What are Tides?

What happens to intertidal zones at high tide?

• They turn into mudflats

• They disappear completely

• They become dry and exposed

• They are completely submerged in water

Tags

NGSS.HS-LS2-6

How do tides help shape coastlines?

• By bringing sand that fills in low areas

• By eroding rocks into pebbles

• By creating large waves

• By depositing seaweed

Tags

NGSS.HS-ESS2-5

What is high tide?

• A period of high water levels

• A time when the ocean is calm

• A period of low water levels

• A time when the ocean is stormy

What do high tides bring onto the shore?

• Driftwood and logs

• sand, shells, and sediment

• rocks and pebbles

• seaweed and algae

Tags

NGSS.HS-ESS2-5

When do neap tides occur?

• during a full moon

• during a new moon

• when the Sun and Moon are at a 90 degree angle to the Earth

• when the moon is closest to Earth

What are the two main types of tides?

• day & night tides

• spring & neap tides

• summer & winter tides

• high & low tides

What happens to tides when the Moon is closer to the Earth?

• tides become weaker

• tides stop occuring

• tides only occur once a day

• tides become stronger

Tags

NGSS.HS-PS2-4

What type of tide will occur at 9:30 a.m.?

• low 
• high 
• none
• high and low

Why do tides not occur at the same time every day?

• because the Earth rotates faster than 24 hours

• because the moon changes its shape

• because the Earth takes a little longer than 24 hours to rotate

• because the sun changes its position

How do tides affect the Earth's surface?

• They cause earthquakes

• They have no effect on the Earth's surface

• They create mountains

• They alter the surface by changing water levels

Tags

NGSS.HS-ESS2-5