The Living Sea

🔸Tiny, floating plants and animals that live in the ocean are called (a)   .

🔸 (b)   are plant plankton that look like miniature jewels when viewed under the microscope.

• Plankton

• Corals

• Sea anemones

• Diatoms

Answer explanation

Diatoms have glassy skeletons in beautiful forms like snowflakes, fans, or circles filled with tiny rods.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Without ______, nothing could live because all living things must contain some ______ in their body tissues.

• Water

• Oxygen

• Carbon

• Nitrogen

Answer explanation

The human body is about 65% water. If a person were deprived of water for about a week, he would die.

Tags

NGSS.MS-LS2-1

Water is made up of tiny particles called (a)   , which can then be broken down into smaller particles called (b)   .

• molecules

• atoms

• ions

Answer explanation

💠Atom particles by themselves are no longer water.

💠Atoms are so small that there are 500 billion trillion atoms in every teaspoon of water.

Tags

NGSS.MS-PS1-1

A ______ is the smallest part of a substance that still has qualities of that substance.

• Molecule

• Atom

• Hydrogen

• Aquifer

Tags

NGSS.MS-PS1-1

A water molecule is made up of (a)   atom(s) of hydrogen

and (b)   atom(s) of oxygen.

• 2

• 1

• 3

Answer explanation

Hydrogen and oxygen are gases found in the air.

Tags

NGSS.MS-PS1-1

How much of the Earth's surface is covered by the ocean?

• 3/4

• 1/4

• 1/3

• 1/2

More than ___ of the Earth's water is in the ocean.

• 50%

• 75%

• 87%

• 97%

Answer explanation

💧There's enough water to cover the whole Earth more than a mile deep if all the land were leveled and pushed into the deep ocean basin.

💧The rest of the Earth's water is in the polar ice caps, rivers and streams, lakes, aquifers, and atmosphere.

Tags

NGSS.MS-ESS2-4

______ are underground places where water collects.

• Ice Caps

• Aquifers
• Rivers
• Lakes

Tags

NGSS.MS-ESS3-1

A set of events happening again and again is called a (a)   . An example of this is ocean water that goes from the ocean to the air, to the land, and back again to the ocean.

• cycle

• precipitation

• climate

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Match each term to its correct definition.

• Water vapor

• A form of water that has no shape and does not fill up a certain amount of space

• Precipitation

• Any form of water that comes down from the clouds

• Evaporation

• Changing back to a liquid

• Condense

• The changing from liquid to vapor

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4