MYA SC.4.E.6.4

MYA SC.4.E.6.4

By Mrs. Hernandez

Multiple Choice

In which environment is erosion likely to have the most impact?

• a.       a steep hillside with little vegetation and strong downpours

• b.       a steep hillside covered with grasses and mild downpours

• c.       a flat valley with little vegetation and heavy downpours

• d.       a flat valley covered with grasses and mild downpours

Multiple Choice

1.       Yardangs are tall, broad peaks that appear in deserts. Weathering and erosion work together to form yardangs. They are produced by wind that carries dust or sand. The gritty wind wears away the soft rock of a cliff, leaving a shape like the one seen here.

What are the agents of weathering and erosion that form yardangs?

• a.       wind picking up sand from the desert

• b.       wind and sand wearing away the rock face

• c.       rock particles falling to the base of the yardang

• d.       loose particles from the cliff blowing to new parts of the desert

Multiple Choice

On the first day of school, a class of fifth-grade students are given four identical cubes of hard clay.  The cubes are placed in four different conditions until the last day of school.  At that time, the students make the following observations.

Sample 1: classroom cabinet → no noticeable changes

Sample 2: near a window → lighter in color

Sample 3: freezer → small cracks near corners

Sample 4: bottle of water → small amount of algae on top

Which sample shows evidence of physical weathering? 

• a.       Sample 1

• b.       Sample 2

• c.       Sample 3

• d.       Sample 4