Quiz 2: Plate Tectonics & Properties of Seawater

Question 1

During seafloor spreading, rocks closer to the mid ocean ridges are younger. True or False

Answer 1

True

Question 2

The process of old crust being pulled down and remelted is called _____?

Answer 2

Subduction

Question 3

What evidences do scientists use to support the continental drift theory?

Answer 3

Rocks, Fossil, Climate

Question 4

The following areas support release of magma, except:

Answer 4

Deep Sea Trenches

Question 5

Why is Earth not growing in spite of the seafloor spreading?

Answer 5

Because of the subduction in the Pacific Ocean

Question 6

At timescale, volume and salinity of seawater is constantly changing. True or False

Answer 6

False

Question 7

Vapor pressure of seawater decreases with increasing salinity. True or False

Answer 7

True

Question 8

Temperature decreases with increasing salinity. True or False

Answer 8

True

Question 9

Adding salt increases density of a solution. True or False

Answer 9

True

Question 10

At increasing temperature, seawater freezes. True or False

Answer 10

False

Question 11

Most abundant ionic solid dissolved in seawater.

Answer 11

Sodium Chloride/ NaCl

Question 12

Salinity refers to the dissolved organic ions in grams (g) over 100kg of water. True or False

Answer 12

False

Question 13

These are small lightweight, portable and low cost equipment which measures salinity.

Answer 13

Conductivity meter/ Refractometer

Question 14

Density decreases with decreasing depth. True or False

Answer 14

True

Question 15

Water columns with large density gradient are said to exhibit density stratifications. True or False

Answer 15

True