[2015] ella defrang (2015-2016 Reading, 2015-16 5th Grade Social, 2015-2016 Science): Earth's Changi

by bensand
Last updated 5 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
5

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[2015] ella defrang (2015-2016 Reading, 2015-16 5th Grade Social, 2015-2016 Science): Earth's Changi

What Causes Earthquakes and Volcanoes ?When plates shift or get caught on each other they can cause earthquakes or volcanoes. They usally occur at faults or cracks. Most volcanoes form near colliding plates.

How are rocks classified?There are 3 types of rocks igneous, metamorphic, and sedimentary. Sedimentary rocks are formed from sediment igneous rocks are formed from molten, and metamorphic rocks are rocks that are changed from heat and pressure

How are minerals identified?You can identify a mineral by it's apperance and other properties.A mohs scale describes the hardness of the rock. Color luster and streak are other ways to identify a mineral .

What is Erosion?Erosion is the movement of materials. Deposition drops off materials from erosion. Gravity is the main cause of erosion.

What is Weathering?Weathering is the slow but desructive process. Weathering breaks rocks into smaller pieces. There are two types of weathering-mechanical and chemical.

What is the Structure of Earth?Earth consists of 3 layers crust(solid),mantle(liquid),outer core(liquid),and inner core(solid). The mantle is the thickest and the crust is the thinnest.

Earth's Changing Surface

By Ella DeFrang


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