1. Which of the following layers is farthest from Earth's center?
a. outer core
b. mesosphere
c. asthenosphere
d. lithosphere
2. How do seismic waves help scientists understand Earth's layers? Select the two correct answers.
a. Scientists can observe how seismic waves change speeds when passing through different layers.
b. Scientists can generate seismic waves in order to observe their paths through Earth.
c. Scientists can observe how seismic waves multiply when passing through different layers.
d. Scientists can observe which seismic waves cannot pass through certain layers.
e. Scientists can observe which seismic waves change the composition of the layers they pass through.
3. At which continental feature would you expect to find metamorphic rock? Select the correct answer.
a. volcano
b. lake bottom
c. valley
d. mountain
4. Which of these provides evidence for how tectonic plates move?
a. earthquakes
b. mantle convection
c. ocean waves
d. hotspots
5. Wegener believed continents moved, but he did not know how. Identify what needed to happen before Wegener's idea about moving continents could be proven.
a. Wegener had to recheck his data and change his conclusions.
b. Advances in technology were needed to gather more evidence.
c. New information was needed on the composition of Earth's crust.
d. Scientists had to directly observe tectonic plate movement.
6. The age of material on a tectonic plate depends in part on what type of crust it is composed of. Ocean floorContinental crustOceanic crust tends to be younger because it is constantly recycled at the (deep sea vent, shot spots, mid-oceanic ridges). On the other hand, (ocean floor, oceanic crust, continental crust) tends to be older because it can often remain intact for longer periods.
7. At the Mid-Atlantic Ridge, magma sinks (beneath, rises) from Earth’s crust, pushing the North American plate and the Eurasian plate (away from, toward each other). Because of the movement of the plates, the Atlantic Ocean continuously becomes (wider, narrower).
8. Which statement best describes how the availability of minerals affects human activity?
a. Humans tend to seek out the rarest minerals for the greatest economic benefit.
b. Humans tend to migrate toward areas with plentiful mineral resources.
c. Humans must find new mining areas in order to protect the environment.
d. Humans must depend on the mineral resources that are easy to access.
9. Why are sinkholes one major environmental risk of underground mining?
a. Underground mines are more likely to cause water pollution, which causes sinkholes.
b. Underground mines are more likely to cause erosion, which causes sinkholes.
c. Underground mines may collapse after mining is complete, which causes sinkholes.
d. Underground mines release gases, which causes sinkholes.
10. Which situations described are examples of a standards and measurements issue related to land reclamation? Select the two correct answers.
a. Monitoring of water quality at a reclaimed site shows high levels of metals, like lead, in the water.
b. Vegetation introduced to a reclaimed site is an invasive species that isn't native to the area.
c. Despite permit agreements, a mining company abandons a mine site after closure of the mine.
d. A mining company claims that protecting an endangered species should not be included in permitting.
e. The funding by a local developer to repurpose a reclamation site as a shopping center is withdrawn.
here are my answers:
1. c
2. a & c
3. a
4. a
5. c
6. ??
7. rises, away from, narrower
8. c
9. a
10. ??
1 answer
1 answer