Water Quality and Salinity Warmup

A measure of warm or cold a body of water is. Cool water is better for organisms.

• temperature

• dissolved oxygen

• turbidity

• nitrates & phosphates

• bioindicators

Tags

NGSS.MS-LS1-5

During a science experiment, Luna, David, and Ethan observed a pond with high turbidity. What effect would this higher turbidity have on the pond's water temperature?

• Turbidity has no effect on water temperature

• Lower turbidity makes water cooler

• Higher turbidity makes water hotter

• Higher turbidity makes water cooler

Tags

NGSS.MS-PS3-4

What can cause an increase in nitrates and phosphates in water?

• Agricultural runoff

• Lower temperatures

• Higher dissolved oxygen

• Decreased aquatic life

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Why is dissolved oxygen important for water potability?

• It increases turbidity

• It supports aquatic life

• It decreases pH

• It indicates high temperatures

Select the ways to maintain water quality.

• Choose environment friendly options for pest control

  and fertilisers.

• Throw garbage to the rivers.

• Keep drains clear and unclogged.

• Take all unwanted chemicals, paint, oil to designated collection sites.

Tags

NGSS.MS-LS2-5

This is a chemical found in water from fertilizer

• pH

• nitrates

• phosphates

• dissolved oxygen

Priya and William are conducting a science experiment in their school. They are testing the water quality of a local pond. They need to measure the dissolved oxygen level in the water. Can you tell them in what unit they should measure it?

• kg/L

• ppm

• mg/L

• g/L

What is salinity?

• The property of containing salt

• The amount of suspended solids

• Describes the condition of the water

• Describes how acidic or basic water is

Which glass has the highest salinity?

• The left one

• The middle one

• The right one

What is the primary factor that affects the salinity of ocean water?

• Evaporation

• Wind speed

• Water temperature

• Ocean currents