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6.05 & 6,06

8th Grade 2022

QuestionAnswer
What are two most common elements in the atmosphere? Nitrogen (78%), Oxygen (21%)
What are two most common elements in living things? Oxygen (65%), Carbon (18%), Hydrogen (10)%
What are two most common elements in Earth's ocean? Oxygen (86%), Hydrogen (11%)
What are two most common elements in Earth's crust? Oxygen (47%), Silicon (28%)
Which feature of Earth makes it unique and able to support life? Liquid Water
Water molecules are polar, which means they are a slightly positive and negative end. The oxygen is slightly ___ and the two hydrogens are slightly ___. Negative, Positive
Water's ability to stick to other water molecules is called its _______ force. Cohesive
Water's ability to stick to other materials is called its _______ force. Adhesive
Water is given the name universal ___________ because it is able to dissolve a large number of substances on Earth. Solvent
Unlike most substances, solid water is ____ dense than liquid water. Less
Ice floats because liquid water's density is ________ than ice Greater
Places near large bodies of water have a mild climate, because water holds a lot of ________ Heat
Weathering that involves water filling in the cracks of rocks, freezing and expanding, and breaking the rocks into smaller pieces is called _______. Physical
What type of weathering involves water taking in CO2 turning the water into a mild acid? Chemical
97% of the water on Earth is ___ and found in ___. Salty, Oceans
<1% of the water on Earth is ___ and found in ___. Fresh, Lakes, Rivers & Streams
Where is most of Earth's freshwater found? Frozen, in the polar ice caps
Created by: Mr. Dornfeld
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