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Listed under:  Joules

### Energy and the solar challenge

The way we live depends on energy but we can't see or touch it. Discover how early scientists unravelled the mystery of energy that allows us to harness its power to improve our lives. Track the development of energy converters from massive steam-driven engines through to the high technology of solar energy used in the ...

### How many calories to heat water?

A calorie is a unit used to measure energy, such as heat or kinetic energy. Calories are commonly used to measure the energy contained in food, but what exactly does a calorie look like? In this clip, a science reporter experiences a calorie of energy from a slingshot and an electric shock, in an attempt to explain.

### The Metrix: power

Charge the Metrix spacecraft’s laser gun with the required power rating. Use the metric measurement table to help you make unit conversions. This learning object is one in a series of 26 objects.

### Energy calculator: How much energy do I need?

Use this calculator to find out how well your energy intake in the form of food matches the energy required for your level of activity in a day. Experiment with adjusting your food and your level of activity and discover the effects of your intake energy being lower or higher than your energy requirements for various activity ...

### Energy and power

Learn how work and energy are related, and how the energy of systems can be used to solve problems about motion. Identify situations in which mechanical energy is conserved. Calculate the power of moving objects. This resource consists of a video in six sections with a supporting web page containing background material.

### experiMENTALS: Energy in soft drinks

This resource contains information about how to calculate the amount of sugar and number of kilojoules in soft drink and fruit juices and brief explanation for students the effect of consuming too much sugar.

### Homeowners going solar

With rising electricity bills, more homeowners have been installing solar panels. In this clip see why, in 2013, the Western Australian Government was considering changes to a situation where any surplus energy produced through the system was returned to the home owner as credit.