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NGES Unit 1 Flashcards | StudBud
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NGES Unit 1
NGES Unit 1
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Earth's Early History
Flashcards
22 cards
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Practice quiz
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Questions
22
Answers
1
What sources provide the best evidence of the age of the Earth?
Solar radiation that impacts the Earth.
Weathering and erosion patterns in rain forests
Asteroids, lunar rocks, and other objects in our solarsystem
Weathering and erosion patterns in extreme environments
2
All of the following are formed at convergent boundaries EXCEPT:
Trenches
Mountians
Mid ocean ridges
Volcanoes
3
What is the source of energy powering the Earth's core?
Radioactive Decay
All of the Above
Pressure
Latent heat from Earth's formation
4
The absolute age of an igneous rock can best be determined by
Examining the rock's relative position in a rock formation
Comparing the the crystals in the upper and lower parts
Examining the environment in which the rock is found
Comparing the # of decayed and undecayed radioactive atoms
5
The oceanic crust consists mainly of _________.
Basaltic rocks
Granitic rocks
Gabbroic rocks
Ultramafic rocks
6
All of the following support the theory of plate tectonics EXCEPT:
Satellite probe reading prove the mantle is moving
Fossils of the samespecies are found on different continents
Each continent has rock of different compositions
The continents fit together like puzzle pieces
7
As the mantle heats up from the core, it tends to
Sink
Become More Dense
Become Less Dense
Change into Lava
8
What is the process that moves broken rocks to a new location called?
Cementation
Erosion
Weathering
Vaccination
9
What type of plate boundary is shown in the picture?
Divergent
transform
none of the above
Convergent
10
The half-life of cobalt-60 is 5 yr. If you have 10g of Co-60, how much will be left after 15yr
1.25 grams
5 grams
0.625 grams
2.5 grams
11
The continental crust consists mainly of _________.
Granitic rocks
Ultramafic rocks
Gabbroic rocks
Basaltic rocks
12
Americium-242 has a half-life of 6hr. If you start with 24g and end with 3g, how much time past
18 Hours
24 Hours
6 Hours
12 Hours
13
What percentage of the original parent atoms are left after 11, 400 years?
12.5%
100%
50%
25%
14
What is the process that breaks rocks down called?
Weathering
Vaccination
Cementation
Erosion
15
All of the following plate boundary-land formation are correct EXCEPT:
DIvergent- Trenches
Convergent- Volcanoes
Convergent- Monutains
Transform- Earthquake
16
What is responsible for the movement of the tectonic plates?
Convection currents in the mantle
convection currents in the oceans
Convection currents in the core
electrical currents from the core
17
What is responsible for the alteration of Earth's land formations?
The meteors that are constantly hitting the Earth
The movement of the tectonic plates
Weathering and Erosion
Radioactivity in the Earth's core
18
Where is the youngest layers of rock found on Earth?
On the edges of the conteninets
In the center of the conteninets
At the mid-ocean ridges
At the ocean trenches
19
How many half-lives have occurred at 17,100 years?
2
1
3
4
20
What is accretion?
Dust formation in the dense hot center of the solar system
Gravity pulling together rocks and dust.
Dark matter and dark energy colliding to form a supernova.
The process of separating atoms to form heavy elements.
21
What is responsible for the difference in ages of the rock on Earth?
Changes that rocks experience when exposed to sunlight.
The different rates that molten minerals cool
Destruction and renewal at tectonic plate boundaries.
The process of separating atoms to form heavy elements.
22
Which states that the Earth and the solar system, were developed from a cloud of gas and dust?
Nebular Theory
Giant-Impact Hypothesis
Conservation of Matter
Photosynthesis
