Earth Science Exam 1 Review

Question 1

When looking at a map that included a divergent boundary, such as in Iceland how do the ages of rocks relate to the map?

Accepted Answer

Youngest rocks are near the boundary and get older as you move outward.

Question 2

What causes seismic waves to change speeds and refract (bend) as they pass through the Earth's interior?

Accepted Answer

Changes in density

Question 3

During heat transfer, which direction does thermal energy always travel?

Accepted Answer

From warm to cold

Question 4

Which best describes the crust and mantle relative to the thickness and density compared to each other?

Accepted Answer

The crust is thinner and less dense than the mantle.

Question 5

Oceanic crust is

Accepted Answer

All of these choices are true.

Question 6

When a heat source is removed from a fluid, convection currents within that fluid will

Accepted Answer

Slow down and stop

Question 7

What property causes the materials that compose planets to settle into distinct layers during planetary differentiation?

Accepted Answer

density

Question 8

Heat transfer within a fluid takes place by

Accepted Answer

Convection

Question 9

When geologists drilled rock samples on either side of the mid ocean ridge, what did they discover?

Accepted Answer

All these answers are correct.

Question 10

What do geologist look at to determine whether the Earth's polarity was normal or reversed in a certain time period?

Accepted Answer

The alignment of magnetic minerals in rock samples from the sea floor.

Question 11

What evidence allows geologists to infer that the Earth's outer core is made of liquid molten metals?

Accepted Answer

S waves cannot pass through the outer core.

Question 12

In sea floor spreading, new molten materials come to the surface

Accepted Answer

At mid ocean ridges.

Question 13

What are the 2 sources of thermal energy in the Earth's interior?

Accepted Answer

Gravity and radioactive decay.

Question 14

Cities located closest to tectonic plate boundaries are more likely to use earthquake resistant technologies.

Accepted Answer

True

Question 15

Which statement best explains why seismic waves form shadow zones when passing through the Earth?

Accepted Answer

The different densities of the Earth's layers cause the waves to refract.

Question 16

An area where 2 tectonic plates slide past each other in opposite directions is known as a

Accepted Answer

transform boundary

Question 17

What happens to the temperature and density of material in a convection current as it moves away from its heat source?

Accepted Answer

Temperature decreases while density increases.

Question 18

The geologic process that pulls older, denser lithosphere back into the mantle to be re-melted is called

Accepted Answer

subduction

Question 19

When 2 plates come together at a convergent boundary, what property determines which plate subducts under the other?

Accepted Answer

Density

Question 20

How do the fossils of the same organisms on different continents support Wegener's hypothesis of continental drift?

Accepted Answer

The organisms existed when the continents were Pangea.

Question 21

Which of these was NOT used as evidence to support sea floor spreading?

Accepted Answer

Fossil remains of sea creatures on the ocean floor.

Question 22

Which 2 geologic features are created at convergent boundaries

Accepted Answer

Mountains and dep ocean trenches

Question 23

The entire crust and the very top of the upper mantle form the solid _____ of the Earth.

Accepted Answer

Lithosphere

Question 24

If you used students to model particle movement when thermal energy was increased, you would have the students

Accepted Answer

Move randomly, starting slowly then increasing their speed.

Question 25

What geologic feature is created by a divergent boundary on dry land?

Accepted Answer

Rift valley

Question 26

Over 90% of the upper mantle forms this region where solid rock has a plastic physical property.

Accepted Answer

Asthenosphere

Earth Science Exam 1 Review

Questions 26

Earth Science Exam 1 Review

Questions 26