Ch 11: ScienceSaurus Student Handbook Grades 6-8: Ecosystems

About This Chapter

The Ecosystems chapter of this ScienceSaurus Student Handbook Grades 6-8 Companion Course helps students learn the essential lessons associated with ecosystems. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Ecosystems textbook chapter.

How It Works:

  • Identify the lessons in the ScienceSaurus Ecosystems chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover the ecosystems topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Population ecology
  • Factors affecting sizes of populations
  • Food chains and trophic levels
  • Energy pyramids
  • The definition for carbon dioxide
  • The nitrogen cycle
  • Ecological succession
  • Biomes
  • Kinds of forests
  • Types of water-based ecosystems

ScienceSaurus is a registered trademark of Houghton Mifflin Harcourt, which is not affiliated with Study.com.

11 Lessons in Chapter 11: ScienceSaurus Student Handbook Grades 6-8: Ecosystems
Test your knowledge with a 30-question chapter practice test
Population Ecology: Definition, Theory & Model

1. Population Ecology: Definition, Theory & Model

In this lesson, learn how population ecologists study populations and their interactions with their environment. You will learn about the various terms and models they use to describe and understand this complex field of study.

The Human Population: Factors that Affect Population Size

2. The Human Population: Factors that Affect Population Size

The human population is constantly changing. In this lesson, we will explore the factors that cause increases and decreases in the human population, including births, deaths, immigration, and emigration.

Factors that Affect Animal Population Size

3. Factors that Affect Animal Population Size

In this lesson, you will learn about the many factors that may influence animal population size, such as nutrition, competition, and even things like parasitism.

Food Chains, Trophic Levels and Energy Flow in an Ecosystem

4. Food Chains, Trophic Levels and Energy Flow in an Ecosystem

In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.

What is an Energy Pyramid? - Definition & Examples

5. What is an Energy Pyramid? - Definition & Examples

When organisms eat other organisms, energy is transferred. An energy pyramid can be used to diagram this flow of metabolic energy. Here we will examine the definition of an energy pyramid, look at some examples, and finish with a brief quiz.

What is Carbon Dioxide? - Definition & Explanation

6. What is Carbon Dioxide? - Definition & Explanation

Carbon dioxide is a colorless, odorless gas found in our atmosphere, our bodies, and many other places. Learn more about this gas and take the quiz at the end of the lesson.

The Nitrogen Cycle: Definition, Facts & Steps

7. The Nitrogen Cycle: Definition, Facts & Steps

Oh the places we'll go on our nitrogen cycle tour! Nitrogen is an element that cycles through you, me, plants, and other organisms. This lesson will not only follow nitrogen on this cycle, but will also share some nitrogen facts!

Ecological Succession: From Pioneer to Climax Communities

8. Ecological Succession: From Pioneer to Climax Communities

Just as people grow and change so, too, do ecosystems. Watch this lesson to learn about ecological succession from the beginning stages of development to a community's ultimate destination, or climax.

Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

9. Biomes: Tundra, Taiga, Temperate Grassland, and Coastlines

Take a trip with us in this lesson, starting in the Pacific Ocean, traveling across California through the Central Valley and up to the peaks of the Sierra Nevada mountains. We'll learn how oceans, elevation, and people can determine which types of biomes are found in different areas and check out the Earth's most massive and oldest organisms.

Biological Diversity and the Forest: Ecosystems of the Rainforests and Temperate Forests

10. Biological Diversity and the Forest: Ecosystems of the Rainforests and Temperate Forests

In this lesson, you'll learn about three main types of forests found on earth: coniferous, deciduous and tropical rainforests. You'll also discover how the ecosystems where these trees are located affect the biodiversity within them.

Ecosystems of Oceans and Freshwater: Biological Diversity and Water

11. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

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