Year 9 Physical World
Energy is at the heart of the ‘Physical World’ – the world of physics. To make sense of everyday things that many take for granted – such as movement, heat, light and sound – in physics we look for patterns and trends, and describe them (often using maths equations).
In this course you’ll work through two main sections:
- Energy and its sources – we’ll explore the different forms of energy and its sources, how we measure energy and power, what we mean when we say something is ‘energy efficient’, and how we harness different types of energy to ‘make’ electricity. We’ll also look a bit more closely at heat, as one example of energy.
- Waves – we’ll look at how energy is transferred by waves, how we describe waves using a graph and particular quantities like frequency and amplitude. There are two main kinds of waves we’re interested in at this stage: transverse and longitudinal. We’ll explore light as an example of a transverse wave, and sound as an example of a longitudinal wave.
This course will give you a good grounding in the basic knowledge, language and skills you need to take forward to the Physical World section of Year 10 Sciences, and then on to Years 11–13 when it gets called Physics.
How you’ll learn
People learn in different ways. Here are some of the ways you can learn and interact with the materials in this online course.
Self-paced learning – This online course is set up so you can learn at your own pace. So, although there are ‘suggested’ times for each page, they’re just a guideline. Plan your learning to suit you.
Diagrams, videos and interactions – Some people prefer to learn by reading, some by watching and listening, and some by doing. We’ve used diagrams, videos and interactions alongside the text, so that there’s something for everyone!
Practice activities – Throughout this course there are lots of short activities. These activities are for you to check your own understanding, not for someone to mark them. These activities give you a great chance to practise what you’ve learned and compare your answer with the model feedback without being assessed.
Glossary – We’ll be using some technical words and phrases in this course. To help you grow your vocab around the topics, the course includes an online glossary. When you see a word or phrase underlined in the text, move your cursor over it and a definition will pop up – easy as! You can also choose to print a copy of the full glossary.
Discussions – Sharing with others can also be a great way to learn. Talk with your classmates and teacher at school about the ideas you come across in this online course. Even chat to your family at the dinner table about the things you’re learning – if you can explain the ideas to others, you can really be confident in your own understanding.