Unit 15 Lesson 8 What are Tides?

What is an estuary?

• A place where freshwater meets the ocean

  
  

• A deep part of the ocean

  
  

• A type of sand dune

  
  

• A rocky cliff

  
  

Which activity is the easiest to do during high tides?

• Fishing

• Surfing

• Diving

• Sailing

What are Spring tides?

• tides that are weaker than usual

• tides that occur during the spring

• tides that are higher and lower than usual

• tides that only occur once a month

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

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

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How often do tides occur each day?

• 3 times a day

• 2 times a day

• 1 time a day

• 4 times a day

What's the name for the periodic rise and fall of ocean water?

• phases

• tides

• sand dunes

• tsunami

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

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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

Where would you normally see tides?

• in the mountains

• in the deserts

• around ponds and streams

• around oceans or coastlines