Download Earth: Yesterday, Today, and Tomorrow

Earth: Yesterday, Today, and Tomorrow
Study Guide
Test: Thursday, April 3rd
Please use your science student journal and glossary to study for your
test on Thursday, April 3rd.
Layers of the Earth: Refer to page 5
What are the 3 layers of the Earth?
What makes up the different layers? Ex: Crust: mostly granite
Earth as a Giant Magnet: Refer to pages 18-21
What causes Earth to act as a magnetic field?
Explain how a compass helps people find direction.
Tectonic Plates:
Explain how tectonic plates change the surface of the Earth. (Hint:
Think about earthquakes, mountains, volcanoes, etc…)
Tectonic plates are constantly moving. What causes this movement?
(page 5, question 2)
At one time all of the continents came together to form one giant
continent, called Pangaea. Over time the continents separated and
drifted. What is continental drift? What evidence is there that the
continents were drifting? Refer to page 30
What can scientists learn from plotting earthquakes on a map? (pg. 1)
Where do most earthquakes occur? Why do they occur there? (Hint:
Think about our activity with the map on the bulletin board…Ring of
Fire)
Plate Boundaries
Study pages 12 - 14 in your science student journal. Make sure that
you understand what the vocabulary convergent and divergent mean.
Be able to recognize the diagrams of the boundaries and what occurs.
What happens when tectonic plates rub against each other? (pg. 4)
What happens when tectonic plates collide? (pg. 4)
What happens when tectonic plates move apart from each other? (pg.
4)
Fossils:
Explain how fossils are created. (pg. 35-41)
How can rock layers be helpful in studying geologic time of Earth?
Refer to page 34
***Extra Credit: How can glaciers give us information about Earth’s
past?