Underwater Exploration

How much of the Earth is made up of water?

• 1/2

• 1/3

• 1/5

• 2/3

Tags

NGSS.MS-ESS2-4

Why does water pressure increase as you go further down in the ocean?

• The water is very heavy

• There is more water above you as you go down, causing pressure

• The water has salt in it

• The water is absorbing your pressure

How do we know what the bottom of the ocean looks like?

• We have cameras below sea

• We send scuba divers down

• Ships drop an anchor to measure the depth and create a map.

• We swim down and explore

How deep is the Mariana Trench?

• As deep as 5 trains

• As deep as 36 Empire State Buildings

• As deep as 3 cruise ships

How much of the Earth is made of ocean?

• 25 percent

• 50 percent

• 70 percent

• 80 percent

Why is the sea floor dark?

• light is absorbed at the top of the ocean

• sea floor animals like the dark

• sea floor animals are sensitive to the light

How does echosounding equipment work?

• They send a camera down to the ocean

• They send a scuba diver down to the ocean

• They ask fish for a description

• They send soundwaves down to the ocean

Tags

NGSS.MS-PS4-2

How does echosounding know how deep the water is?

• The faster the sound bounces back, the more shallow the water is

• The machine has a giant ruler

• There is a camera that takes pictures

Tags

NGSS.MS-PS4-2

How many scientists can the ALVIN hold?

• 1

• 3

• 5

• 12

What does ROV stand for?

• Right Ocean Vehicle

• Remote Operated Vehicle

• Really Oversized Vehicle

• Rain Ocean Valleys