Secondary Catalogue

The results are in - gravity is weaker than it should be! Lotus is certain that someone is digging a giant cave underneath the Big Apple, but Mark isn't convinced. Who do you think is correct? This lesson will assess the accuracy, reliability and validity of the experiment to measure the acceleration due to gravity performed in the previous lesson. Show Less

The cunning Carmen breaks into a jewellery store and steals $5 million in diamonds! Vector Man can't help because he is crippled by hunger. Will the police be able to catch her? This lesson will outline how to convert between graphs of motion by calculating areas. Show Less

In a repeat of the failed dinner date at Hopeless Ramentics, Mark Brent leaves Lotus to stop a robbery and save the day! That is, until he falls prey to his ultimate weakness! This lesson will introduce how to convert between graphs of motion, focusing on relationships involving gradients. Show Less

Black Friday is normally celebrated with sales and shopping sprees, but this year, someone is tinkering underground. Will Mark, Georgie and Lotus discover Lexi Luthor's lair? This lesson will introduce a simple experiment to measure the acceleration due to gravity. Show Less

From water to table salt, we safely come into contact with countless chemical compounds every day. But compounds can also be deadly. Using Turkish President Turgut Özal’s death and eventual autopsy as real-life context, this video examines the chemical and structural qualities of compounds—in particular, the toxic pesticide known as DDT. Complemented by clear graphics, it is essential viewing for students of chemistry. Show Less

The products of mining—metals, minerals and fuels—are essential to our everyday lives. But the waste by-products from mining processes, called tailings, can be highly toxic. Using the 2014 Mount Polley Mine tailings dam and its catastrophic release of toxic chemical mixtures into the environment as an example, this video explores the make-up of mixtures, identifying the differences between solutions, colloids and suspensions. Complemented by clear graphics, it is essential viewing for students of chemistry. Show Less

Dylan gives Lotus a VIP tour of Lexicorp's state-of-the-art facilities. On the surface, she's here to buy stuff, but secretly, she's investigating the link between Lexicorp and the missile launch! This lesson will apply acceleration-time graphs to represent motion. Show Less

In this episode, we look at how electrical equipment is designed to use the right amount of current for the voltage supply that it's designed for. After a brief recap on electric current, we look at what voltage is and how it is measured. we then look at the concept of resistance. At a simple level, some materials are conductors and some materials are insulators, but not all conductors conduct equally well. The amount of current that flows in a household appliance depends on the appliance's resistance Show Less

In the second episode, we examine how lights, switches, and other electrical devices are all connected either in "series" or in "parallel" with each other. How do they wire up the lights in your house so that in some rooms the light switch turns on only one light but in other rooms the light switch switches on two (or more) lights? And how is everything wired up so as to allow us to turn the lights on and off in different rooms independently of one another. Well, don't wait at the terminal, jump on board. Show Less

In episode three, we take a look at what electric current is (it's basically the flow of electrons through a wire) and at how electric current is measured. We then examine the different ways that electric current flows in series and parallel circuits. Show Less

This programme is about seawater. It is the most important liquid on Earth, not only from its sheer volume, but also because it has remarkable qualities. A few of them, like buoyancy, are common to all liquids - but seawater is also the cradle of life. Three key factors of water underpin life in the sea: water’s dissolving power, its tendency to keep a stable temperature, and its transparency to light. This programme explains the mechanisms and the outcomes of these key facts—and other things—that make seawater both weird and wonderful. Show Less

The archery contest has a long list of rules, but Chelsea the Cheater keeps breaking them! How does this affect the outcome (conclusion) of the competition? This lesson will begin our analysis of validity by examining the importance of the independent, dependent and controlled variables of an experiment. Show Less

Exam tip: one mark in Physics exams may come from using the correct units. So, if you write and use SI units in all calculations (a pretty simple task), you'll get a free mark! If only the rest of the exam was that easy! This lesson will continue our crash course on units in Physics, focusing on SI prefixes and simple unit conversions. Show Less

The Ancient Greeks believed that everything is made by combining four elements: earth, water, air and fire. It turns out that there's actually seven elements in science - watch this video to find out what they are! This lesson will introduce the fundamental and derived SI units used in Physics. Show Less

We know that Robin Hood is an accurate and reliable archer, but just how good is he? Is his aim god-like, or is he subject to the errors and imperfections of mortals? This lesson will continue investigating the concept of reliability, including random errors, outliers and methods of improving the reliability of experimental results. Show Less