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My Learning at home

I am in Grade 7 – Science

 

Interactions within Ecosystems

The Food Chain

Food Chains, Food Webs and the Energy Pyramid in Ecosystems
What is a food chain and why is it an important concept? An animated description gives you a basic idea of how animals rely on plants and how both fit into the food chain. (5:11)

Biotic and Abiotic Components in an Ecosystem

Biotic and Abiotic Factors in Ecosystems
An ecosystem features both biotic and abiotic components. Learn what these labels mean, how to apply them and how components you describe with the labels are related. (4:08)

Trophic Levels in Ecosystems

Ecosystem Ecology: Links in the Chain – Crash Course
What‘s an ecosystem? This Crash Course video with Hank Green has your answer and much more. (10:09)

Succession in an Ecosystem

Ecological Succession of the Climax Forest
How does a mature forest get started? When the right conditions happen, itís only a matter of time. This animation explains the natural processes involved. (6:23)

Photosynthesis

Photosynthesis – Episode 1 – How Plants Make Food
Photosynthesis – Episode 2 – How Plants Make Food
Two videos explain how plants get energy from the environment through photosynthesis. The first is an overall view and the second is a more detailed explanation. (3:54)

Ecosystem Components

Food Chains, Food Webs and the Energy Pyramid in Ecosystems
Learn about the producers, consumers and decomposers in ecosystems. Discover what roles they play and how they relate to each other as parts of an ecological pyramid. (5:10)

Human Impacts on Ecosystems

Five Human Impacts on the Environment: Crash Course
Hank Green weighs in with a Crash Course video about how we humans rely on the environment for our survival and what risks we might be taking if we donít carefully consider how we affect it. (10:38)

Sustainability in Ecosystems

How Wolves Change Rivers
A brilliantly photographed presentation from Yellowstone National Park in the United States demonstrates how natureís different parts are closely related. (4:33)

Forces and Structures

Forces Acting on the Body

Discover Math and Science through Sport
A series of videos demonstrate the math and science concepts at work behind sport by showing examples from gymnastics, weightlifting, basketball, taekwondo and soccer. (2 to 3 minutes per video)

Centre of Gravity

Centre of Gravity – Elementary Science
This presentation describes how to determine the fixed point that is the centre of gravity for a solid, homogenous object. Itís an important concept in science with many practical applications. (2:24)

Internal and External Forces on Structures

What is a Force?
An interviewer asks people to describe what they believe force is and what forces are acting on them. The interviewer concludes by offering a link to a second video that provides some answers. (3:39)

Earth's Crust

Internal Composition of Earth

Layered Earth Cake
Baking a special Earth-Day cake is used as a simple illustration of the fact that Earth is made of internal layers. (7:57)

Rock and Mineral Formation

Rock Types and the Rock Cycle
Here is a description of three basic rock types, an explanation of how they are formed in nature and how they relate to each other. (6:41)

Plate Tectonics

Plate Tectonics for Kids
An examination of the Earthís crust illustrates tectonic plates and shows how they create earthquakes and mountains. (5:10)

Particle Theory of Matter

Particle Theory of Matter Explained

Particle Theory – Part 1
A basic concept in particle theory is explained through a demonstration that involves predicting the results when different volumes of the same thing are combined. (4:48)

Solids, Liquids and Gases

States of Matter: Solids, Liquids and Gases
Illustrating the particles in solids, liquids and gases shows how particle behaviour gives the three states of matter different characteristics. (3:00)