True or False: A heterogeneous mixture is uniform throughout where you can’t see or feel differences, while a homogeneous mixture is not uniform throughout and has different sized parts.

• True

• False

Which of the following IS NOT indicators of a healthy water source?

• Low Temperature

• High Dissolved Oxygen

• High Turbidity

• Neutral pH

Which of the following pH is a strong base?

• 1

• 5

• 7

• 13

What is turbidity?

• How much dissolved oxygen is in water.

• How cloudy water is.

• How acidic water is.

• How warm or cold water is.

Which will most likely result if there is increased upwelling in a coastal area?

• Decreased movement of deep ocean currents

• Higher temperature surface water.

• More aquatic life.

• Less dissolved oxygen.

Tags

NGSS.MS-ESS2-6

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

If a body of water has high turbidity levels, what can most likely be concluded?

• It has a lot of life.

• It is good for aquatic organisms

• It will have many bioindicators.

• It is unsafe to drink

Tags

NGSS.MS-LS1-5

Which best describes the characteristics of a river basin?

• The area where fresh and saltwater meet.

• The place when cold rich nutrient filled water surfaces.

• The land drained by a river and its tributaries

• The underground place where freshwater is stored.

Which of these organisms is a producer in a marine ecosystem?

• Sea otter

• Crab

• Algae

• Seagull

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What are the electrons found on the outer shell of a Bohr Diagram.

• Ions

• Valence Electrons

• Atomic Structure

• Plasma

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol