MSCI 112 LAB FINAL EXAM QUESTIONS VERIFIED
ANSWERS
The _______________ is the crust and the upper brittle mantle, while the
_____________ is made up of the lower mantle. - Answers - lithosphere
asthensophere
Reasons why Wegener's Continental Drift Hypothesis was rejected: - Answers - -
Suggested that tidal forces moved plates across the ocean.
- New Tech made to prove theory
- Seismographs revealed a pattern of volcanoes and earthquakes
- Radiometric dating of rocks revealed a surprisingly young oceanic crust
- echo sounders revealed shape of mid-atlantic ridge
Mid-ocean ridges are found at _______________ boundaries - Answers - divergent
Trenches are associated with and found next to either ________________ _________
OR __________________. - Answers - continental arcs
Island arcs
The Hawaiian chain was formed as the Pacific plate moved across a
______________________. - Answers - Mantle Plume
- Formed from lava plumes within plate
- A line of extinct volcanoes forms over time
Archimedes principle: - Answers - an object floating in water will displace a mass of
water equal to the mass of the floating object.
- mass of floating object = mass of displaced water
You measure a column of water with a density of 1.002 g/cm^3 and a height of 17 cm,
and a second column with a water height of 15 cm and a wooden block with a density of
0.75 g/cm^3. What is the height of your block of wood? - Answers - Column 1:
- d = 1.002 g/cm^3
- h = 17 cm
Column 2:
- d = 1.002 g/cm^3
- h = 15 cm
Wooden Block:
- d = 0.75 g/cm^3
-h=?
1.002 x 17 = (1.002 x 15) + (0.75 x h)
17.034 = 15.03 + 0.75h
ANSWERS
The _______________ is the crust and the upper brittle mantle, while the
_____________ is made up of the lower mantle. - Answers - lithosphere
asthensophere
Reasons why Wegener's Continental Drift Hypothesis was rejected: - Answers - -
Suggested that tidal forces moved plates across the ocean.
- New Tech made to prove theory
- Seismographs revealed a pattern of volcanoes and earthquakes
- Radiometric dating of rocks revealed a surprisingly young oceanic crust
- echo sounders revealed shape of mid-atlantic ridge
Mid-ocean ridges are found at _______________ boundaries - Answers - divergent
Trenches are associated with and found next to either ________________ _________
OR __________________. - Answers - continental arcs
Island arcs
The Hawaiian chain was formed as the Pacific plate moved across a
______________________. - Answers - Mantle Plume
- Formed from lava plumes within plate
- A line of extinct volcanoes forms over time
Archimedes principle: - Answers - an object floating in water will displace a mass of
water equal to the mass of the floating object.
- mass of floating object = mass of displaced water
You measure a column of water with a density of 1.002 g/cm^3 and a height of 17 cm,
and a second column with a water height of 15 cm and a wooden block with a density of
0.75 g/cm^3. What is the height of your block of wood? - Answers - Column 1:
- d = 1.002 g/cm^3
- h = 17 cm
Column 2:
- d = 1.002 g/cm^3
- h = 15 cm
Wooden Block:
- d = 0.75 g/cm^3
-h=?
1.002 x 17 = (1.002 x 15) + (0.75 x h)
17.034 = 15.03 + 0.75h
