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1.a A) the belief that continents have always been located at their current locations on Earth B) the belief that continents have quickly moved apart to their current locations on Earth C) the belief that continents are moving slowly together from their current locations on Earth D) the belief that continents have moved slowly apart to their current locations on Earth 2.
1.a A) Galileo Galilei B) Harry Hess C) Alfred Wegener D) Albert Einstein 3.
1.a A) the large landmass in which all continents once were connected B) Earth's inner core C) the large landmass that all continents are currently forming D) the largest fault found on Earth 4.
1.a A) Fossils of animals have been found on continents separated by oceans. B) a puzzle-like fit of all the continents C) Similar rock structures have been found on different continents. D) all of the above 5.
1.a A) leftover portions of glaciers B) enormous valleys formed by glaciers C) glacial deposits and rock surfaces scarred by glaciers D) cold climates 6.
1.a A) The longer it takes a sound wave to return to the ship, the deeper the water is. B) The longer it takes a sound wave to return to the ship, the more shallow the water is. C) The less time it takes a sound wave to return to the ship, the deeper the water is. D) The longer it takes a sound wave to return to the ship, the colder the water is. 7.
1.a A) strike-slip faults B) continental drift C) convection currents D) seafloor spreading 8.
1.a A) when Earth's magnetic field suddenly disappears for short periods of time B) when Earth's magnetic field leaves the south pole and enters the north pole C) when Earth's magnetic field leaves the north pole and enters the south pole D) when Earth's magnetic field suddenly runs east/west instead of south/north 9.
1.a A) a thermometer B) a magnetogram C) a magnetometer D) a fieldometer 10.
1.a A) a new seafloor B) underwater mountains C) the continental shelf D) the continental slope 11.
1.a A) mountainous B) smooth C) sloping D) flowing 12.
1.a A) the belief that Earth is broken into sections that fit together into one sphere B) the belief that continents have moved slowly apart to their current locations on Earth C) the belief that hot, less dense material is forced up through Earth's crust through mid-ocean ridges D) the belief that Earth's crust and upper mantle is broken into sections 13.
4.c A) the movement of the planets B) gravity slab pull C) convection currents D) the Sun's gravity 14.
1.b A) the upper part of the mantle B) large, flat stones sitting on top of malleable magma C) the plates that make up the crust D) the plates that make up the crust and the upper part of the mantle 15.
1.c A) forms mountains B) causes volcanoes C) forms ocean basins D) all of the above 16.
1.c A) They can collide, pull apart, or slide against each other. B) They only can move toward each other. C) They only converge or diverge. D) They only collide or slide along each other. 17.
1.c A) Gravity is pulling it down. B) It is too dense and is sinking into Earth. C) because new crust is being added to the other edge of the boundary D) The other edge of the boundary is being pulled into Earth's core. 18.
1.c A) provide two-way radio service for police cars, fire trucks, and ambulances B) provide mobile telephone service C) broadcast television signals D) provide information about the receiver's exact location at or above Earth's surface 19.
1.c A) faults B) boundaries C) tension D) compression 20.
1.c A) colliding B) separating C) sliding D) buoyant 21.
1.b A) lithosphere B) outer core C) aesthenosphere D) crust
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