the earth questions

Question description

QUESTION 1

  1. Which of these is part of the lithosphere?

    inner core
    outer core
    all of the mantle
    crust and outer part of the mantle

2 points

QUESTION 2

  1. Which part of the mantle is still a solid but flows like a thick, heavy liquid?

    asthenosphere
    lithosphere
    crust
    core

2 points

QUESTION 3

  1. Seismic waves travel at different speeds according to type. What is the speed of seismic waves from fastest to slowest?

    S waves, L waves, P waves
    P waves, S waves, L waves
    L waves, S waves, P waves
    P waves, L waves, S waves

2 points

QUESTION 4

  1. What is the best description of the paths of S waves and P waves?

    S waves travel through solids, liquids, and gasses. P waves travel through solids or very dense, glassy liquids.
    S waves travel along the surface of Earth’s crust. P waves travel through Earth’s interior.
    S waves travel through Earth’s interior. P waves travel along the surface of Earth’s crust.
    S waves travel through solids or very dense, glassy liquids. P waves travel through solids, liquids, and gasses.

2 points

QUESTION 5

  1. What is the exact location of an earthquake on Earth’s surface?

2 points

QUESTION 6

  1. What evidence did Wegener make use of to develop the theory of continental drift?

    Mountains in North America appear to be part of the same chain of mountains as those in Northern Europe.

2 points

QUESTION 7

  1. According to the theory of continental drift, which option indicates the order of how the continents changed positions?   Graphic shows 3 world globes. The first one labeled A, shows all the continents on Earth broken up as to how they appear today. The next globe, labeled B, shows one very large piece of large land where all the continents are connected. Globe C shows the continents drifting away from eachother a little bit.

2 points

QUESTION 8

  1. The theory of continental drift proposes that the Earth’s continents may have once been united as a supercontinent but have drifted apart over time. What was the name of the supercontinent?

    Gondwanaland
    Pangaea
    Laurasia
    Americas

2 points

QUESTION 9

  1. Over time the original supercontinent broke into two large land masses. What are the names of these two land masses?

    Laurasia and Pangaea
    Laurasia and Gondwanaland
    Gondwanaland and Pangaea
    Pangaea and Eurasia

2 points

QUESTION 10

  1. Over time Pangaea broke apart to form other continents. Which modern day continents composed Laurasia?

    North America, Europe, and most of Asia
    North America and South America
    Africa, South America, Antarctica, Australia, and the subcontinent of India
    Antarctica, South America, and Europe

2 points

QUESTION 11

  1. Which term is described as a flat expanse of ocean floor?

    continental shelf
    abyssal plains
    deep-sea trenches
    guyots

2 points

QUESTION 12

  1. Which term is described as a seamount with a flattened top?

    continental shelf
    abyssal plains
    deep-sea trenches
    guyots

2 points

QUESTION 13

  1. Where are the youngest rocks in the Earth’s crust found?

2 points

QUESTION 14

  1. Iron-rich minerals in rock pointed in one direction and then switched to the exact opposite direction. This supports what idea?

    The rocks were being turned around.
    Earth’s magnetic field stopped working entirely.
    Earth’s magnetic field goes through pole reversals.
    Being underwater makes the rocks respond to magnetic fields.

2 points

QUESTION 15

  1. How does the ocean floor keep track of magnetic fields?

    There are magnets in the ocean floor
    All rocks act like magnets
    Basalt is iron-rich and responds to magnetic fields
    Being underwater makes the rocks respond to magnetic fields.

2 points

QUESTION 16

  1. Which of these pieces of evidence did Alfred Wegener’s original theory of continental drift have access to?

    seafloor spreading at mid-ocean ridges
    reversing paleomagnetism in rocks on the ocean floor
    evidence of ancient tropical swamps in cold regions of North America
    a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains

2 points

QUESTION 17

  1. Which theory best explains the present arrangement of continents, oceans, and landforms on Earth?

    plate tectonic theory
    Wegener’s continental theory
    The continental puzzle theory
    the Pangaea theory

2 points

QUESTION 18

  1. Which description best presents the arrangement of continents, oceans, and landforms according to the theory of plate tectonics?

2 points

QUESTION 19

  1. Which two forces do scientists believe are responsible for tectonic plate motion?

    gravity acting on the edges of plates and friction between the plate and the asthenosphere
    friction between the plate and the asthenosphere and pressure of magma on the edge of the plate
    gravity acting on the edges of plates and convection in the mantle
    convection in the mantle and pressure of magma on the edge of the plate

2 points

QUESTION 20

  1. Which of these statements is true about the theory of plate tectonics and the theory of continental drift?

    The theory of plate tectonics explains how continental movements could occur.
    The theory of plate tectonics shows that continental movements could not have happened.
    The theory of plate tectonics tells exactly where the continents were before Pangaea divided.
    The theory of plate tectonics shows that Pangaea was impossible, but the continents did move.

2 points

QUESTION 21

  1. What activates a convection current, starting the flow of a fluid?
    heated liquids at Earth’s surface

2 points

QUESTION 22

  1. Which of the following is a result of gravity in relation to moving tectonic plates?

    Earth’s magnetic field reverses
    ridge push and slab pull
    circulating material in the mantle
    Earth’s internal heating

2 points

QUESTION 23

  1. How can gravity’s role in tectonic plate motion be described?

    Earth’s magnetic field reverses
    ridge push and slab pull
    circulating material in the mantle
    Earth’s internal heating

2 points

QUESTION 24

  1. Which two processess do scientists think move the Earth’s lithospheric plates?

    gravity acting on the edges of plates and friction between the plate and the asthenosphere
    friction between the plate and the asthenosphere and pressure of magma on the edge of the plate
    gravity acting on the edges of plates and convection in the mantle
    convection in the mantle and pressure of magma on the edge of the plate

2 points

QUESTION 25

  1. At what location does gravity play a role in moving tectonic plates?

    in the mantle
    in the middle of a continent
    at the edge of the plates
    in the core

2 points

QUESTION 26

  1. How is continental crust different from oceanic crust?

    Continental crust is more dense and contains a lot of basalt.
    Continental crust is thinner and younger.
    Oceanic crust is thinner and younger.
    Oceanic crust is thicker and contains a lot of granite.

2 points

QUESTION 27

  1. Look at this section of a tectonic map. Describe what is happening at the plate boundary.

    Techtonic map of Earth with dotted line boundary drawn in the center of the Atlantic Ocean and a diagram of techtonic plates shifting left and right along that dotted line boundary

2 points

QUESTION 28

  1. What happens at a convergent boundary?

    Mountains form as lithospheric plates move side by side past each other.

2 points

QUESTION 29

  1. At which type of boundary do lithospheric plates collide?

2 points

QUESTION 30

  1. What happens when two continental plates meet at a convergent boundary according to plate tectonics?
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