1 A) leftover portions of glaciers B) cold climates C) glacial deposits and rock surfaces scarred by glaciers D) enormous valleys formed by glaciers 2 A) The less dense oceanic plate slides under the denser continental plate. B) The denser oceanic plate slides on top of the less dense continental plate. C) The less dense oceanic plate slides past the denser continental plate. D) The denser oceanic plate slides under the less dense continental plate. 3 A) slide along each other B) move away from each other C) move toward each other D) converge 4 A) No, earthquakes always occur when two continental plates collide. B) Yes, subduction always occurs when continental plates collide. C) No, usually no subduction occurs when continental plates collide. D) Yes, subduction always occurs when oceanic plates collide. 5 A) Similar rock structures have been found on different continents. B) Fossils of animals have been found on continents separated by oceans. C) a puzzle-like fit of all the continents D) all answers are correct 6 A) the belief that continents have moved slowly apart to their current locations on Earth B) the belief that Earth is broken into sections that fit together into one sphere 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 7 A) a boundary where rocks move in the same directions at the same rate B) a boundary where rocks on the same side of the fault move in the same direction, but at different rates C) a boundary where rocks on opposite sides of the fault move in opposite or the same directions at different rates D) a boundary where rocks in the fault never move 8 A) This evidence proved that new seafloor features are constantly being added due to reversals of Earth's magnetic field. B) This evidence proved that the rocks on the seafloor were older than rocks on continents. C) This evidence proved that new seafloor features are constantly being added due to seafloor spreading. D) This evidence proved that new seafloor features are constantly being added due to continental drift. 9 A) continental drift B) convection currents C) seafloor spreading D) strike-slip faults 10 A) The longer it takes a sound wave to return to the ship, the more shallow the water is. B) The longer it takes a sound wave to return to the ship, the colder 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 deeper the water is. 11 A) because new crust is being added to the other edge of the boundary B) The other edge of the boundary is being pulled into Earth's core. C) Gravity is pulling it down. D) It is too dense and is sinking into Earth. 12 A) Rift valleys are formed from normal faults. B) Normal faults occur in the northern hemisphere, but rift valleys only occur in the southern hemisphere. C) Rift valley formation has nothing to do with normal faults. D) Rift valleys sometimes occur near normal faults, but their formation is not related to these faults. 13 A) Galileo Galilee B) Alfred Wegener C) Albert Einstein D) Harry Hess 14 A) when Earth's magnetic field suddenly disappears for short periods of time B) when Earth's magnetic field leaves the north pole and enters the south pole C) when Earth's magnetic field suddenly runs east/west instead of south/north D) when Earth's magnetic field leaves the south pole and enters the north pole 15 A) the movement of the planets B) convection currents C) the Sun's gravity D) gravity slab pull 16 A) A transform boundary is when two plates slide past one another. B) A transform boundary is when two plates collide. C) A transform boundary is when two plates move toward each other. D) A transform boundary is when two plates pull away from each other. 17 A) because it's unlikely that the Mesosaurus could swim between continents B) The Mesosaurus fossil evidence does not support the continental drift theory. It proves it wrong. C) because the Mesosaurus lived millions of years ago, when scientists believe the continents began to drift D) because it's unlikely that the Mesosaurus existed on both continents 18 A) the upper part of the mantle B) the plates that make up the crust and the upper part of the mantle C) large, flat stones sitting on top of malleable magma D) the plates that make up the crust 19 A) a magnetogram B) a magnetometer C) a thermometer D) a fieldometer 20 A) It combines with the other rock. B) It disappears from Earth. C) It goes over the other plate. D) It goes under the other plate.
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