Protecting Our Shores and Earth

Which of the following methods is used to protect against beach erosion? a) Removing all rocks from the shore b) Building structures to block ocean waves c) Draining water from the ocean

• a) Planting trees on the beach

• d) Filling the beach with concrete

• c) Building sandcastles along the shore

• b) Building structures to block ocean waves

True or False: Heavy rocks are sometimes used to prevent land from eroding.

• False, heavy rocks are only used for construction.

• True, but only in urban areas.

• False, rocks do not affect erosion at all.

• True

Growing _______ along the shore helps hold the soil and prevent erosion.

• vegetation

• rocks

• sand

• concrete

What are the three natural processes that change the Earth's surface mentioned in the text? a) Erosion, melting, and earthquakes b) Weathering, erosion, and deposition c) Flooding, deposition, and burning

• b) Weathering, erosion, and deposition

• a) Erosion, melting, and earthquakes

• c) Flooding, deposition, and burning

• d) Erosion, sedimentation, and volcanic activity

How does weathering occur, and what does it break down?

• Weathering creates new minerals.

• Weathering is a process that only affects soil.

• Weathering is the movement of rocks by water.

• Weathering breaks down rocks and minerals.

True or False: The Grand Canyon is an example of landform collapse caused by erosion.

• True

• The Grand Canyon was formed by volcanic activity.

• False

• The Grand Canyon is a result of tectonic plate movement.

Deposition by water can build up a beach and create a substantial _______.

• island

• cliff

• sandbar

• cove

Which of the following is a consequence of beach erosion? a) Wider beaches b) Loss of land c) More sand dunes

• b) Loss of land

• Increased wildlife habitat

• More stable shorelines

• Higher beach tourism

What is one way to prevent erosion on hillsides? a) Planting trees b) Removing vegetation c) Paving the ground

• Digging trenches

• Using gravel

• a) Planting trees

• Building a fence

True or False: Erosion can happen quickly during a storm.

• Storms have no impact on erosion.

• Erosion only occurs slowly over time.

• True

• Erosion is a process that only happens in dry conditions.