Search Header Logo
Dissolved Oxygen and Aquatic Life

Dissolved Oxygen and Aquatic Life

Assessment

Interactive Video

Biology

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

Leroy Creswell from Orca Killroy Academy demonstrates how salinity and temperature affect dissolved oxygen in water. The experiment involves measuring dissolved oxygen at different temperatures and salinities using a YSI 55 meter. Results show that higher temperatures and salinities decrease dissolved oxygen levels, impacting aquatic life. The video concludes with a discussion on the implications of these findings, particularly in warm climates where fish kills are more common.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main challenge for aquatic animals in extracting oxygen compared to terrestrial animals?

Aquatic animals have more oxygen available.

Aquatic animals need to extract oxygen from water.

Terrestrial animals have less oxygen in the air.

Terrestrial animals need to extract oxygen from water.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using different water baths in the experiment?

To measure the effect of light on oxygen levels.

To observe the effect of temperature and salinity on dissolved oxygen.

To test the effect of different fish species on oxygen levels.

To measure the effect of air pressure on oxygen levels.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What tool is used to measure dissolved oxygen in the experiment?

A YSI 55 dissolved oxygen meter.

A barometer.

A thermometer.

A salinity meter.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At what temperature and salinity was the highest level of dissolved oxygen observed?

35°C and 0 parts per thousand salinity

5°C and 30 parts per thousand salinity

35°C and 30 parts per thousand salinity

5°C and 0 parts per thousand salinity

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is brackish water?

Water with high salinity.

A mix of freshwater and seawater.

Water with no salinity.

Water with low oxygen levels.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does an increase in salinity affect the level of dissolved oxygen at the same temperature?

It increases the level of dissolved oxygen.

It stabilizes the level of dissolved oxygen.

It has no effect on the level of dissolved oxygen.

It decreases the level of dissolved oxygen.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of temperature on the ability of water to hold dissolved oxygen?

Higher temperatures increase dissolved oxygen levels.

Temperature has no effect on dissolved oxygen levels.

Lower temperatures decrease dissolved oxygen levels.

Higher temperatures decrease dissolved oxygen levels.

Access all questions and much more by creating a free account

Create resources

Host any resource

Get auto-graded reports

Google

Continue with Google

Email

Continue with Email

Classlink

Continue with Classlink

Clever

Continue with Clever

or continue with

Microsoft

Microsoft

Apple

Apple

Others

Others

Already have an account?