Earth's Dynamic Surface

A general definition of cohesion is the attraction of:

• particles of the same substance

• particles of a different substance

Why is fruit ripening a positive feedback loop?

• Fruit ripening is not a positive feedback loop.

• The ethylene gas released by ripe fruit triggers more ethylene gas production.

• The ethylene gas released by ripe fruit triggers less ethylene gas production.

• The ethylene gas released by ripe fruit triggers no change in ethylene gas production.

Feedback is an impact to an system component that is a consequence of an action or change in the component.

• True

• False

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-6

What is the gaseous form of water called?

• water vapor

• steam

• water mist

• vapor

The temperature at which a substance changes from a liquid to a solid (for water, this is 0 degrees Celsius, 32 degrees Fahrenheit) is called what?

• boiling point

• melting point

• freezing point

• evaporation

Tags

NGSS.MS-PS1-4

What is the boiling point of water?

• 0 C

• 100 F

• 100 C

• 50 C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is water's freezing point?

• 32 C

• 50 C

• 0 C

• 0 F

Tags

NGSS.MS-PS1-4

Which type of feedback loop tends to hold a system to some equilibrium state making it more stable?

• Positive feedback

• Negative feedback

Tags

NGSS.HS-LS1-3

What property of water allows water to flow against gravity?

• polarity

• high specific heat capacity

• solubility

• capillary action

What is Earth's energy budget?

• how much sunlight Earth absorbs minus how much it radiates to space as heat

• how much sunlight Earth absorbs times how much it radiates to space as heat

• how much sunlight Earth absorbs plus how much it radiates to space as heat

• how much sunlight Earth absorbs divided by how much it radiates to space as heat

Tags

NGSS.HS-ESS2-4