7th TCAP Review: The Earth: Question Preview (ID: 25031)


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The way a mineral reflects light is called its
a) texture. b) cleavage. c) luster. d) streak.
Which question would NOT be useful to ask if you wanted to identify a mineral?
a) What color is it? b) What is its density? c) How hard is it? d) Is it a solid, liquid, or gas?
Which of these is a characteristic of a mineral?
a) It has a noncrystalline structure. b) It exists in a liquid state. c) It is a natural substance. d) It has a varying chemical composition.
When water vapor, methane, and carbon dioxide are released into the atmosphere, trapped heat is reradiated back to Earth. Which of these will most likely occur when heat is reradiated back to Earth?
a) Acid precipitation will form. b) Soil contamination will increase. c) Surface temperatures will increase globally. d) The ozone will become thinner and break down.
Which of these formed the Appalachian Mountains?
a) sea-floor spreading b) continental plates colliding c) river sediment deposition d) frequent earthquake activity
As the ozone layer in the upper atmosphere becomes depleted, skin damage can occur from exposure to high levels of ultraviolet (UV) rays. Which human activity has contributed to the breakdown of the ozone layer?
a) construction of wind turbines to generate electricity b) introduction of invasive plant species into local ecosystems c) construction of dams for hydroelectric power d) release of chlorofluorocarbons (CFCs) into the atmosphere
What is the best approximation of the distance a tectonic plate moves each year?
a) less than one millimeter b) a few centimeters c) several meters d) more than one kilometer
Which of these is mostly likely to happen because the oceanic lithospheric plates move away from each other?
a) New sea floor forms. b) Tides become higher. c) Winds become stronger. d) Water moves to higher latitudes.
Geologists placed posts on opposite sides of divergent plates to determine the rate of plate movement. How far apart will the posts most likely have moved after 10 years?
a) 50 centimeters b) 5 meters c) 50 meters d) 5 kilometers
What makes up most of the outer core of Earth?
a) liquid water b) molten rock c) hydrogen and helium gas d) liquid iron and nickel
The top layer of Earth is only about 50 kilometers thick. This layer is known as the
a) mantle. b) outer core. c) inner core. d) crust.
As a riverbank erodes away, sand and mud are transported downstream and settle at the bottom of a lake. Over time, what type of rock is most likely formed at the bottom of the lake?
a) igneous b) lunar c) metamorphic d) sedimentary
Which is the hardest mineral on the Mohs scale?
a) talc b) fluorite c) quartz d) diamond
When magma transforms into igneous rock, which process is taking place?
a) breaking down of rock b) melting under very high pressure c) change due to heat and pressure d) cooling and solidifying
When sedimentary rock transforms into metamorphic rock, which process is taking place?
a) breaking down of rock b) melting under very high pressure c) change due to heat and pressure d) cooling and solidifying
Which rock forms from magma that cools and hardens?
a) granite b) gneiss c) sandstone d) limestone
Which rock forms from sediments that become compacted and cemented together?
a) granite b) basalt c) limestone d) gneiss
Which layer of Earth consists mostly of iron?
a) continental crust b) oceanic crust c) mantle d) core
Which of these layers makes up most of Earth's mass?
a) continental crust b) oceanic crust c) mantle d) core
Which statement is true about Earth's tectonic plates?
a) They float on the lithosphere. b) The float on the asthenosphere. c) They do not move. d) They float on the core.
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