MECO Water & Life

Water is a universal solvent

• True
• False

Which types of compounds dissolve easily in water?

• Polar and Nonpolar
• Polar and Ionic
• Nonpolar and Ionic
• Covalent and Nonpolar

Why does ice float?

• water expands when it freezes, making ice less dense than water

• water compacts when it freezes, making ice more dense than water

• hydrogen bonds in water push the ice to the surface

• ice is afraid of water, and avoids it

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Tags

NGSS.MS-ESS2-6

Which process will increase the salinity of ocean water?

• evaporation
• currents
• Coriolis effect
• density

How are salts added to the ocean?

• precipitation
• evaporation
• erosion from land
• density

What causes tides?

• wind
• differences in density
• gravity from the moon
• plate tectonics

Tags

NGSS.MS-ESS1-1

NGSS.MS-PS2-4

The picture represents a(n) ___ event.

• El Nino

• La Nina

• La Nada

Tags

NGSS.MS-ESS2-6

NGSS.MS-ESS2-5

This is the extreme bacteria that lives in extreme conditions.

• Animalea

• Protista

• Archeabacteria

• Eubacteria

Which of the following is the best model for cilia?

• A
• B
• C
• D

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2