Science Unit 7 Test

Question 1

What is abrasion? Is it chemical or physical weathering?

Answer 1

Rock is broken down from contact with other rock or sediment, causing physical weathering

Question 2

What are the three types of stress?

Answer 2

Compression (convergent), tension (divergent), and shear (trandform)

Question 3

Explain what relief is on a topographic map.

Answer 3

The difference in elevation between the highest and lowest point

Question 4

Explain the 3 purposes of a topographic map.

Answer 4

elevation and shape of mountain, depth, steepness, river flow, etc

Question 5

Why is there little vegetation found near geysers in the lowest level of a topographic map?

Answer 5

they release of high heat, excess minerals and water into the environment

Question 6

What type of boundary creates volcanic islands?

Answer 6

Oceanic/oceanic convergent boundaries when one plate is subducted under another, like the Aleutian Islands in Alaska

Question 7

Explain what dredging is and how it changes a coastline overtime if taken from a deep channel or trench

Answer 7

Removing sediment from a shallow ship channel to make it deeper and easier for ships to travel through