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Ch 41: ILTS Biology: The Hydrosphere

About This Chapter

Use the videos in this chapter to renew your learning about the Earth's water systems, including their formation and composition, as you study for the ILTS Biology exam. We provide many methods for you to prepare to answer exam questions on the hydrosphere.

ILTS Biology: The Hydrosphere - Chapter Summary

Let us help you study for the ILTS Biology exam by refreshing your understanding of the Earth's water system and how it functions. These short video lessons on the hydropshere can aid you in correctly answering questions on topics such as:

  • Ecosystems of the oceans and fresh water
  • The water cycle
  • The distribution of water
  • Composition of fresh, brackish and salt water
  • Buoyancy
  • Hydrostatic pressure
  • Theories about the formation of the oceans
  • Types of waves
  • Ocean zones
  • Continental margins
  • The oceanic ridge system

We provide a variety of tools to guide you in your review for the ILTS Biology exam. Our lessons can be viewed on a computer, smartphone or tablet. A written transcript has important terms and concepts highlighted, and we also give you a worksheet that you can print out for offline study.

ILTS Biology: The Hydrosphere Chapter Objectives

In Illinois, passing the ILTS Biology exam is a requirement for certification to teach biology in a public school. The exam contains 125 multiple-choice questions, divided into six subareas. Questions on the material covered in this chapter are in the subarea on Earth Systems and the Universe.

Every video lesson is accompanied by a multiple-choice quiz. This quiz gives you a feel for the types of questions you'll encounter on exam day and also let you assess your knowledge. If you answer a question incorrectly, we provide a link back to the lesson, so you can just jump back to the video to review the information.

15 Lessons in Chapter 41: ILTS Biology: The Hydrosphere
Test your knowledge with a 30-question chapter practice test
Ecosystems of Oceans and Freshwater: Biological Diversity and Water

1. Ecosystems of Oceans and Freshwater: Biological Diversity and Water

In this lesson, you'll learn about the biodiversity of ecosystems based on water. You will discover that marine, freshwater and a mixture of salt and freshwater create very different ecosystems, which in turn influence the amount of biodiversity that is found in these habitats.

The Water Cycle: Precipitation, Condensation, and Evaporation

2. The Water Cycle: Precipitation, Condensation, and Evaporation

This lesson discusses the processes water takes as it moves around the Earth in the water cycle. You'll get an in-depth look at condensation, precipitation, and evaporation.

The Distribution of Water on Earth

3. The Distribution of Water on Earth

Water covers most of Earth but in a variety of forms. In this video lesson you will learn about how water is distributed on Earth, though you may be surprised to find out just how little of it we can access!

Chemical Composition & Physical Attributes of Fresh, Brackish & Salt Water

4. Chemical Composition & Physical Attributes of Fresh, Brackish & Salt Water

Discover the differences between fresh, brackish, and saltwater. Learn about their chemical and physical features. Afterward, see how well you know the differences by taking a quiz.

Buoyancy: Calculating Force and Density with Archimedes' Principle

5. Buoyancy: Calculating Force and Density with Archimedes' Principle

Knowledge of the buoyant force is important when trying to understand why some objects float while other objects sink. In this lesson you'll learn about this unique force and how we apply it to various situations using Archimedes' Principle.

Hydrostatic Pressure: Definition, Equation, and Calculations

6. Hydrostatic Pressure: Definition, Equation, and Calculations

This video lesson will introduce you to hydrostatic pressure in a liquid, as well as provide examples for how to calculate the liquid's pressure at a given depth.

Fluid Mass, Flow Rate and the Continuity Equation

7. Fluid Mass, Flow Rate and the Continuity Equation

Fluids rarely stay put, so we need to understand how they move. In this lesson, you will learn about how the movement of fluids is influenced by the space it passes through, as well as see examples of how to calculate aspects of this movement.

Oceans: Facts & Information

8. Oceans: Facts & Information

Over fifty percent of the world's population lives near a coastline. The oceans of the world affect our everyday lives, from recreation to resources, to climate. Learn some fun facts about this unique feature of our planet!

Theories About How Oceans Were Formed

9. Theories About How Oceans Were Formed

Today, more than 2/3 of Earth is covered with water, mostly in our oceans. But Earth itself is much older than our oceans. In this lesson you'll explore theories on how our oceans formed, as well as why liquid water remains on Earth even after all this time.

Ocean Circulation: Patterns & Effect on Climate

10. Ocean Circulation: Patterns & Effect on Climate

The ocean waters are always in motion and as they travel around the globe they carry and distribute heat, which affects the global climate. Learn about the ocean circulation patterns and how they impact the climate.

Waves: Types, Features & Effect on Erosion

11. Waves: Types, Features & Effect on Erosion

There are different types of ocean waves, including wind waves, tsunamis and tidal waves. Learn the features of waves and how their erosive effect creates the unique features found on the shoreline.

Characteristics of Different Ocean Zones

12. Characteristics of Different Ocean Zones

The oceans can be divided into horizontal and vertical zones. These divisions help us better understand the characteristics of these vast bodies of water. Learn what these zones are in this lesson.

Active & Passive Continental Margins

13. Active & Passive Continental Margins

Continental margins are areas that separate the continental crust and oceanic crust. Discover the differences between the tectonically active continental margins and the relatively quiet passive continental margins.

Ocean Basins: Definition, Formation, Features & Types

14. Ocean Basins: Definition, Formation, Features & Types

Ocean basins are those areas found under the sea. They can be relatively inactive areas where deposits of sediment slowly collect or active areas where tectonic plates meet. Learn how ocean basins form and about features such as oceanic ridges and trenches.

Oceanic Ridge System: Formation & Distribution

15. Oceanic Ridge System: Formation & Distribution

The oceanic ridge system is a continuous underwater mountain range with parts found in every ocean of the world. The ridge system is created when magma rising between diverging plates of the lithosphere cools and forms a new layer of crust.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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Other Chapters

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