Module 4

Question 1

1. A convection current is caused by differences in temperature resulting to
   variation in ___________.
   A. air pressure
   B. color
   C. density
   D. mass

Answer 1

A. air pressure

Question 2

2. It is a measure of how much mass there is in a volume of a substance.
   A. volume
   B. temperature
   C. density
   D. mass

Answer 2

A. volume

Question 3

3. Hot molten materials in a convection cell rises near the ______________.
   A. outer core
   B. crust
   C. inner core
   D. mantle

Answer 3

D. mantle

Question 4

4. Which of the following theory explains how the heavy plates move along the
   different types of plate boundaries.
   A. Continental Drift Theory
   B. Plate tectonic Theory
   C. Seafloor Spreading Theory

Answer 4

B. Plate tectonic theory

Question 5

5. The motion of gas or liquid caused by differences in temperature is a _________.
   A. tectonic movement
   B. plate tectonic
   C. convection current
   D. magma chamber

Answer 5

C. Convection Current

Question 6

6. A driving force for plate motion at mid-ocean ridges as a result of the rigid
   lithosphere sliding down ___________.
   A. slab pull
   B. ridge push
   C. convection current
   D. seafloor spreading

Answer 6

B. ridge push

Question 7

7. Lithospheric plates are flowing in this area .
   A. inner core
   B. asthenosphere
   C. outer core
   D. lithosphere

Answer 7

B. aesthenosphere

Question 8

8. Which of the following is NOT a method of heat transfer?
   A. condensation
   B. convection
   C. conduction
   D. radiation

Answer 8

A. condensation

Question 9

9. Which of the following is NOT a driving force of tectonic plates?
   A. ridge push
   B. slab push
   C. drag force
   D. mantle convection

Answer 9

C. drag force

Question 10

10. What is the source of heat in a mantle convection current?
    A. the Sun
    B. the crust
    C. the core
    D. the moon

Answer 10

C. the core

Question 11

1. Which of the following DOES NOT describe a convection process?
   A. the handle of a metal pot is hot while cooking
   B. boiling of macaroni pasta
   C. a sea breeze
   D. ocean water in the surface is warmer

Answer 11

A. the handle of a metal pot is hot while cooking

Question 12

2. Which of the following has a faster movement of molecules?
   A. hot materials
   B. warm materials
   C. cold materials
   D. room temperature materials

Answer 12

A. hot materials

Question 13

3. Which of the following has a lesser density in a convection cell?
   A. warm fluid materials
   B. cold fluid materials
   C. room temperature fluid materials
   D. hot fluid materials

Answer 13

D. hot fluid materials

Question 14

4. In a convection current, hot materials move ______________.
   A. any direction
   B. sideward
   C. upward
   D. downward

Answer 14

C. upward

Question 15

5. The motion of gas or liquid caused by differences in temperature is a _________.
   A. tectonic movement
   B. plate tectonic
   C. convection current
   D. magma chamber

Answer 15

C. convection current

Question 16

6.Which is not a geologic feature that occurs in the plate boundaries?
A. mountains
B. volcanoes
C. trenches
D. subduction

Answer 16

D. subduction

Question 17

7. In which part of the innermost layer of the earth does convection current occur?
   A. inner core
   B. outer core
   C. mantle
   D. asthenosphere

Answer 17

C. mantle

Question 18

8. Lithosphere at ________________boundary will uplift and tear apart due to rising
   hot magma.
   A. convergent
   B. divergent
   C. transform-fault
   D. mantle

Answer 18

B. divergent

Question 19

9. Older oceanic crust pushes down towards the ______________at the subduction
   zone.
   A. ridge
   B. trench
   C. fault
   D. crack

Answer 19

B. trench

Question 20

10. What is the source of heat generated by the core to the mantle?
    A. gases
    B. decayed radioactive
    C. molten rocks
    D. molten metals

Answer 20

B. decayed radioactive