Aquatic Science Exam # 2 September 13, 2019

filters pollutants to help purify water

• wetland
• river
• currents

Tags

NGSS.MS-LS2-5

shallow wetland that includes a mix of fresh water and salt water; where a river meets the sea

• estuary
• bog
• lake

large body of water surrounded by land

• lake
• pond
• river

Freshwater has a higher density than salt water. 

• True
• False

Why can water have no net charge but have slight charges in different parts of the molecule?

• The oxygen end is slightly negative and the hydrogen end is slightly positive
• The hydrogen end is slightly negative and the oxygen end is slightly positive
• The hydrogen and oxygen ends change in polarity
• Because it is hydrophobic

Which of the following is an ionic compound?

• Glucose
• Water
• Sodium Chloride
• Vegetable Oil

What kind of compound rarely dissolves in water?

• Ionic Compounds
• Covalent Compounds
• Acids
• Bases

_______________ compounds share electrons.

• ionic
• covalent
• metallic
• acidic

What type of water is in the Ocean?

• regular water

• salt water

• fresh water

• spring water

There are _____ oceans in the world

• 4

• 6

• 5

• 9