Reversible or irreversible changes to materials
In this video lesson, we will be investigating irreversible changes such as rusting, burning and cookingexploring how reversible changes can be used to recycle materialsinvest...
Earth's surface
Sudden geological changes and extreme weather events can affect Earth’s surfaceIn this video lesson, we will be looking atexploring ways that scientific understanding can ass...
Electrical energy
In this video lesson, we will beinvestigating how moving air and water can turn turbines to generate electricityinvestigating the use of solar panelsconsidering whether an energy s...
Forces
In this lesson, we’re going to look at what forces are and how they act on objects. We’ll be particularly interested in the common forces that can act on obje...
Simple Machines
Our lives are made easier by the use of machines. Machines are energy or force converters. They convert energy of one kind into another, more useful one. In...
Gravity
In this lesson, we’re going to explore the effects of gravity on the Earth. First, we’ll talk about what gravity is, then we’ll have a look at Newton’s...
Solar system
In this lesson, we’re going to look at the reasons why our solar system actually is a solar system. Why do the planets orbit the Sun? And why do moons and s...
Classification
We’ll begin this lecture by talking about the reasons why we classify animals and plants. We’ll be particularly interested in classifying animals. &nbs...
Scientific naming
In this lesson, we’re going to discuss some of the methods that scientist use to name and identify species. We’ll begin with a brief review of the hierarchical cla...
Food Chains
In this video, we’re going to talk about food chains. Food chains show the ways in which organisms in a habitat feed: who produces food, and who eats who. For exa...