Unit 8 Exam Review

Which example of weathering includes a chemical change?

• salt deposits in a rock dissolving during a rainstorm

• pollutants that are dissolved in rain reacting with metals in a rock

• rushing water in a river breaking rough edges of a rock on the riverbead

• water freezing in a small crack in a rock that increases the size of the crack

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What types of changes occur during the erosion and deposition of sediments in a river?

• the erosion and deposition of sediment are physical changes

• the erosion and deposition of sediment are chemical changes

• erosion of sediment is a chemical change, deposition of sediment is a physical change

• erosion of sediment is a physical change, deposition of sediment is a chemcial chagne

Tags

NGSS.MS-ESS2-2

Human activity causes changes to the groundwater and surface water in a watershed. Which change to groundwater or surface water is classified as a chemical change?

• Paved streets cause more water to remain surface water instead of being ground water

• Dams built on rivers create lakes upstream and variable flow downstream

• Industrial waste that is dumped in a river causes acidic conditions that cause damage to the ecosystem

• Rainwater collects in drainage ditches and flows to nearby lakes, increasing the water in the lakes

Tags

NGSS.MS-PS1-2

If a large volcano that is on an island erupts, it will impact the local ecosystem. Which of the following is NOT a way the volcano will affect the local ecosystem?

• Lava will run down from the volcano, burning down all the trees around the volcano

• Lava from the volcano will heat up the air in the local area and kill all life in the area.

• When the volcano erupts, it will throw dust into the air affecting plants across the island

• Lava will run into the ocaen an around the island, killing coral reef animals.

Tags

NGSS.MS-ESS2-2

NGSS.MS-LS2-4

Most of the damage done by hurricanes is caused by -

• storm surges that flood coastal areas

• lightning from thunderstorms

• trees falling due to high winds

• windows blowing out of buildings

Which of the following describes an impact of floods on ecosystems?

• strong wings that uproot small plants

• soil erosion along rivers that prevents plants from getting sunlight

• homes that are destroyed and people getting injured

• less competition for space and resources among aquatic organisms

Tags

NGSS.MS-LS2-4

A student has a birdbath made of poured concrete. When she bought it, the salesman suggested that she seal the surface with a watertight solution.

Why was this suggestion made?

• the watertight solution would slow the evaporation of water during periods of warm weather

• rainwater would react with the surface of the concrete and deposit a mineral layer over the caved areas

• it cold, wet weather, any water that seeped into the concrete could freeze and cause the birdbath to crack

• rainwater sits in a concrete basin, the pH becomes to acidic for the birds

Hurricanes along the coast increase the rate of coastal erosion. Over time, this erosion can greatly affect the coastal environment. Which of the following is a result of erosion on coastal enviroments?

• coastal land areas increase

• waves crash on the beach, rocks are broken down

• competition for resources increases as habitats are lost

• steep canyons form from flowing rivers

Tags

NGSS.MS-ESS2-2

Which event in the formation of stalactites is an example of weathering?

• rainwater dissolves calcium carbonate from the limestone in the soil

• the water with dissolved calcium carbonate soaks into the ground towards the caves

• some of the water collects in the pool on the floor of the cave

• some of the water evaporates, leaving the calcium carbonate

Tags

NGSS.MS-ESS2-2

Which event in the formation of stalactites is an example of erosion?

• rainwater dissolves calcium carbonate from the limestone in the soil

• the water with dissolved calcium carbonate soaks into the ground toward the caves

• some of the water collects in a pool on the floor of the cave

• some of the water evaporates, leaving the calcium carbonate

Tags

NGSS.MS-ESS2-2