Earth’s Cycle

Wednesday, March 12

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Bell Work #98

1. Earth’s environments have many different, ever-changing __________ even today.
2. Earliest life forms were influenced by the climates produced by the forming _________ and oceans of Earth.
3. Life on land developed and flourished in the tropical climates and warm shallow seas during the ________ Era.
4. Throughout this era as different land environments formed and sea levels changed, new ______ ______ developed.
5. Other life forms that could not adapt or find suitable conditions, especially many marine species, ___________.

climates

disappeared

life forms

Paleozoic

atmosphere

Classwork:

• Bell work #98
• Interactive notebook check 76-100
• Notes, p. 105
• Review questions from foldable (106)
• Video Layers of the Earth 5.23 Earth Science for Kids (7:52)

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• Quiz on Earth’s Layers tomorrow, Th.
• Test on Earth’s Layers Tues., 4/1.

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Notes on Earth’s Layers

Scientists analyze earthquake waves (also called seismic waves) to study Earth’s interior.

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The vibrations produced by an earthquake are called seismic waves.

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Different layers of the Earth formed due to differences in the density of the materials.

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The Moho layer of the Earth is the boundary between the crust and the mantle.

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The layer that makes up most of the Earth’s mass and volume is the mantle.

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Scientists believe that differences in density cause hot, plastic rock in the asthenosphere to rise toward Earth’s crust.

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INB p 105- 2 slides

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The force of gravity gave Earth its spherical shape.

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The strength of the gravitational pull between two objects is affected by mass and distance.

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The greater mass an object has, the stronger the gravitational force.

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• Video Layers of the Earth 5.23 Earth Science for Kids (7:52)

SLIDESMANIA.COM

Homework:

• Quiz on Earth’s Layers tomorrow, Th.
• Test on Earth’s Layers Tues., 4/1.

​

SLIDESMANIA.COM