Earth's History Review: Question Preview (ID: 18958)

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Which of the following best describes a tectonic plate?
a) a large slab of asthenosphere that moves over Earth's surface b) a slab of crust and upper mantle that moves over Earth's surface c) a part of the asthenosphere in which convection takes place d) a large slab of crust where convection takes place
Many scientists rejected continental drift when it was first proposed because
a) studies of the ocean floor revealed its youger age b) Wegener had no evidence to explain the existence of Pangaea c) reversals in Earth's magnetic field had not yet occurred d) Wegener could not explain how Earth's continents moved
Which of the following causes plate movement?
a) convection currents in the lithosphere b) convection current in the core c) ridge push, slab pull, and convection in the lithosphere d) ridge push, slab pull, and convection in the ashenosphere
Which of these did Wegener use to support his theory of continental drift?
a) similar rocks and similar fossils on different continents b) sea-floor spreading and similar rocks on different continents c) convection currents in the asthenosphere and sea-floor spreading d) fossils from ancient organisms and convection currents in the asthenosphere
How do scientists know what dinosaurs looked like?
a) They observe dinosaurs in nature. b) They examine fossils for clues. c) They study cave paintings. d) They read ancient myths.
Fossils are traces or remains of
a) sunlight b) sediments c) volcanic eruptions d) living things
Rock fossils form
a) in all types of rocks b) in perified wood c) most frequently in sedimentary rock d) most frequently in igneous rock
The body of a large prehistoric animal, such as a mammoth, complete with bones, muscle, skin, and hair might be found preserved in
a) amber b) ice c) cast fossils d) tree rings
One way scientists learn about changes that occurred in Earth's atmosphere a long time ago is by studying
a) mold fossils b) ice cores c) carbon fossils d) tar cores
By studying layers of sedimentary rock, scientists can determine the
a) relative age of the layers b) absolute ages of the layers c) estimated ages of the layers d) fossil ages of the layers
The oldest layer in an undisturbed sedimentary bed is usually
a) on the top b) on the bottom c) the largest d) the smallest
Which statement best describes how Earth changes over time?
a) Earth changes very rarely. b) Eearth is constantly changing. c) Earth is always changing rapidly. d) Earth has never changed.
Humans first appeared
a) during the age of mammals b) during the last part of the age of dinosaurs c) very early in Earth's history d) in the middle of the geologic time scale
The idea that the same forces that change Earth today were alos at work in the past is part of Hutton's theory of
a) fossilization b) uniformitarianism c) sedimentarianism d) formation
Precambrian time consists of the
a) first 4 billion years of Earth's history b) middle 4 billion years of Earth's history c) last 4 billion years of Earth's history d) next 4 billion years of Earth's history
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