Water Cycle

What happens to the particles of a substance when thermal energy is added?

(MS-PS1-4 DOK 1)

• Particles move slower.

• Particles move faster.

• Particles stop moving.

• Particles move at the same speed.

Tags

NGSS.MS-PS1-4

Greenhouse Drips: On a hot afternoon, a sealed glass greenhouse has a shallow water tray. About an hour after peak sunlight, droplets form on the cool metal roof and then fall. Which explanation best fits what happened?

• A. The hot roof squeezed water out of the air by pressure alone.

• B. Gravity pulled water vapor upward to the roof where it turned into liquid without cooling.

• C. The Sun warmed the tray, water evaporated . Near the cool roof the air lost heat, particles slowed and condensed into droplets that got big enough to fall because of gravity.

• D. The metal roof makes water from air by a chemical reaction.

Tags

NGSS.MS-ESS2-4

Valley Fog: After a sunny day near a river, thick fog forms first in the valley just before sunrise, while nearby hilltops stay clear. Which explanation best fits this pattern?

• A. Fog forms where the Moon blocks the most sunlight, which is always valleys.

• B. Daytime sunlight increased evaporation. Overnight the valley cooled more, so water-vapor particles slowed and condensed into tiny droplets; cool, dense air sinks into valleys under gravity, so fog starts there.

• C. The river adds salt that makes fog; elevation doesn’t matter.

• D. Wind on hilltops always stops fog, so valleys fog only because they’re calm.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

What is the water cycle?

(MS-ESS2-4 DOK 1)

• The process by which water circulates through Earth’s system.

• It causes precipitation

• It pulls water into the ground

• It absorbs water from plants

Tags

NGSS.MS-ESS2-4

Which of these correctly demonstrates the order of the steps within the water cycle.

(MS-ESS2-4 DOK 2)

• Evaporation → Precipitation → Condensation →

  Runoff

• Condensation → Evaporation → Precipitation →

  Runoff

• Evaporation → Condensation → Precipitation →

  Runoff

• Precipitation → Evaporation → Condensation →

  Runoff

Tags

NGSS.MS-ESS2-4

Mountain Rain vs. Coast Humidity: The same moist air mass moves from a warm ocean onto land on a sunny day. By late afternoon, the mountain slope gets heavy rain, while the coastal town stays humid with only light drizzle. Which explanation best fits these different results?

• Sunlight dries every place equally; any rain differences are random.

• The coastline blocks evaporation, so only inland areas can get rain.

• Gravity keeps moist air at sea level, so the coast should rain more.

• Sunlight warms the ocean so more water evaporates. As air is lifted up the mountain, it

  expands and cools, so particles slow and condense into clouds and rain; then water returns downhill as runoff because of gravity.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Predict how urbanization(city environment) would affect the water cycle, particularly the runoff process due to man-made surfaces. 

(MS-ESS2-4 DOK 4)

• Urbanization increases runoff due to more impermeable surfaces, leading to less infiltration and more surface water flow.

• Urbanization decreases runoff due to more plants absorbing water.

• Urbanization decreases runoff due to more plants absorbing water.

• Urbanization increases evaporation and decreases precipitation.

Tags

NGSS.MS-ESS2-4

What is the state of matter when particles are closely packed and vibrate in place?

(MS-PS1-4 DOK 1)

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

When thermal energy is removed from a gas, what state does it become?

(MS-PS1-4 DOK 1)

• Liquid

• Plasma

• Gas

• Solid

Tags

NGSS.MS-PS1-4

8. How does the motion of particles in a liquid compare to the motion of particles in a gas?

(MS-PS1-4 DOK 2)

• Particles in a liquid move faster than in a gas.

• Particles in a liquid move slower than in a gas.

• Particles in a liquid and gas move at the same speed.

• Particles in a liquid do not move.

Tags

NGSS.MS-PS1-4