4 th Grade Science By: Lindsey Scott. Learning Objectives As a result from this power point, the students will know about volcanoes and other properties.

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Presentation transcript:

4 th Grade Science By: Lindsey Scott

Learning Objectives As a result from this power point, the students will know about volcanoes and other properties volcanoes contain. The quiz will be a review on the subject the students just learned and will be a way for me, as the teacher, to see if they understood the lesson.

Volcanoes

What is in Volcanoes? Magma - molten rock below the Earth’s surface. Lava – magma on the Earth’s surface.

Different Types of Volcanoes 1.Shield Volcanoes 2.Composite Volcanoes 3.Cinder Cone Volcanoes

Shield Volcano Made of lava Has a small and gentle slope Mostly around oceans Example: Volcanoes near the Islands of Hawaii

Composite Volcanoes Small in size with a steep slope Short life span Made of pyroclastic flow – Pyroclastic flow – fast moving current of hot gas and rock.

Mt. St. Helens Mt. St. Helens is a Composite Volcano Erupted in the state of Washington in 1980 It was very destructive and deadly The eruption created an earthquake, landslide, and explosion. – Earthquake – shaking of the ground caused by the release of energy stored in the rocks beneath the Earth’s surface. – Landslide – when gravity pulls the ground and creates ground movement (including rocks, soil, etc.) along a slope or mountain side.

Mt. St. Helens

Cinder Cone Volcanoes Made of both Lava and Pyroclastic flow Semi-Steep Long life spans (about 100s to 1,000s of years without activity)

Quiz

Question 1 How is magma different than lava? a. Lava is below the Earth’s surface b. Magma is below the Earth’s surface c. There is no difference

Next Question

Correct Answer: b. Magma is below the Earth’s surface

Question 2 Which volcano is this? a. Shield Volcano b. Composite Volcano c. Cinder Cone Volcano

Correct Answer: c. Cinder Cone Volcano

Question 3 Which Volcano is Mt. St. Helens? a. Shield Volcano b. Composite Volcano c. Cinder Cone Volcano

Correct Answer: b. Composite Volcano

Great Job!! Have a wonderful rest of the day! I will see all of you bright and early tomorrow morning!

Source Cited Marshak, Stephen. Essentials of Geology. W. W. Norton & Company, Incorporated, February 27, Print Wikipedia. Mount St. Helens