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Bench4 #25 to end

Earth and Space Section

QuestionAnswer
List the eight phases of the moon in the lunar cycle 1.New 2.Waxing crescent 3.first quarter 4.waxing gibbous 5.full 6.waning gibbous 7.third quarter 8.wanning crescent
What are the tides on Earth caused by? -Because this gravity causes Earth to become egg-shaped, there will be a high tide on the front and back of Earth and a low tide on the sides
What is the main idea of the concept of continental drift? -which claims that the continents once formed part of a single landmass called a supercontinent (Pangaea)
How far are the continents moving around the Earth each year? Few centimeters
lithosphere- is the thin outer shell of Earth that consists of Earth’s crust and the rigid, upper part of the mantle
asthenosphere- The lithosphere is broken up into about 15 pieces called tectonic plates (can be either oceanic or continental plates) that ride on a deformable layer of mantle
he lithosphere is broken into how many tectonic plates? -15
The movement of tectonic plates are driven by what energy source? Caused by mantle convection: heated material that is moving due to the density that are caused by differences in temp
Convergent boundaries when two plates move toward each other and collide
Divergent boundaries- when two plates move away from each other
Transform boundaries plates sliding past each other in opposite directions
List three sources of all energy on Earth: 1.Sun 2.Energy left from earth’s formation 3.Energy from radioactive decay from earth
What are nebulas? What can be born out of nebulas? Interstellar cloud gas and dust, Stars are born out of them
Do stars make lighter elements or heavier elements in their cores? Higher, because of fusion
What happens to the material in stars when they die? The are recycled and sent back out into space
A famous astronomer once described humans as being made of “star stuff.” What did he mean by this statement? -We are each made of a star
Created by: mhackett
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