8th Grade Water Unit Final Assessment

When water freezes it becomes....

• Expands and becomes less dense.

• Expands and becomes more dense.

• Contracts and becomes less dense.

• Contracts and becomes more dense.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Match the following based on their density.

• Least Dense

• Solid

• Most Dense

• Liquid

• In Between

• Gas

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

Match the following.

• The uneven distribution of positive and negative charges across a molecule.

• Surface Tension

• The tendency of water molecules to stick to other substances.

• Polarity

• The tendency of water molecules to stick to one another.

• Cohesion

• The combination of effects of cohesion and adhesion that moves water through a narrow space.

• Adhesion

• The tightness across the surface of water.

• Capillary Action

Match the following

• The term used to describe an area that drains into a smaller river or stream.

• Density

• The ability of a fluid to exert an upward force on an object immersed in water.

• Watershed

• The term used to describe an area that drains into a large river or stream.

• River Basin

• The measure of mass of a substance per unit volume.

• Bouyancy

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS2-5

Match the following

• Wetlands dominated by peat moss.

• Swamps

• Wetlands dominated by grasses.

• Marshes

• Wetland dominated by trees.

• Bogs

The water cycle is also called the ____________ cycle.

Tags

NGSS.MS-ESS2-4

A measure of the degree to which water loses it's transparency due to the presence of suspended particles. (becomes cloudy)

• Cohesion

• Turbidity

• pH

• Absorption

Measure of Kinetic Energy.

• Temperature

• Heat

• Turbidity

• Bio-indicator

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Bio-indicators:​ (a)   found living in water that are sensitive to ​ (b)   . If there is a high level of variety then the water is ​ (c)   but if there is a low level of variety the water is ​ (d)   . Things that impact ​ (e)   are ​ that results in pH changes, temperature, dissolved oxygen and nitrate levels.

• Macroinvertabrates
• pollution
• healthy
• unhealthy
• bio-indicators

The amount of oxygen in the water.

• Open Oxygen

• Filtered Oxygen

• Dissolved Oxygen

• Mixed Oxygen

Tags

NGSS.MS-LS1-6