Changing Earth's Surface

How do pioneer species make ecological succession possible on an island following a volcanic eruption?

• They break down rock into soil in which plants can grow.

• They establish homes in which animals can live.

• They use chemicals to produce food.

• It changes in to a tree.

What happens to a rock when it is weathered?

• It is broken into smaller pieces or dissolved.

• It is moved by air, wind, or smaller.

• It changes in to a new substance

• It is changed in to a tree.

Tags

NGSS.MS-ESS2-2

Which is a cause of PHYSICAL WEATHERING, but not chemical weathering?

• salt

• wind

• acids

• bases

Which is a cause of chemical weathering?

• lce

• Wind

• Oxygen

• Carbon

How could the decaying leaves affect the rocks in the soil underneath them?

• They could increase the amount of physical weathering.

• They could decrease the amount of physical weathering.

• They could increase the amount of chemical weathering.

• They could decrease the amount of chemical weathering.

Tags

NGSS.MS-LS2-3

What condition is MOST LIKELY to create a mudslide.

• Ice

• Rain

• Wind

• Sleet

Tags

NGSS.MS-ESS2-4

Which term is used to identify the area of land that is drained by a river system?

• a divide

• an aquifer

• a watershed

• a delta

Which of the following most directly prevents erosion in a watershed?

• Solid type

• Plant life

• Sediment transport

• ocean

An ecosystem experiences a volcanic eruption that covers the area with lava.

Which of the following organisms is most likely to be a pioneer species in this ecosystem?

• a tall tree

• ground moss

• a small rabbit

• a cow

Which term is used to refer to the path that a river or stream takes?

• Divide

• Channel

• Gradient

• Water