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The functioning of the human body and a car is similar: both use an external energy source whose energy is transformed by internal processes into the energy required for operation.
This lesson presents the formation, dynamics, and devastation of hurricanes through the story of Hurricane Katrina.
In this lesson, you will learn how to make an electromagnet using simple tools and how an electric current produces a magnetic field.
Improve your reading, listening and writing skills.
Learn and practise basic vocabulary to talk about the calendar.
In this lesson, you will learn what kind of danger damage to the ozone layer poses to life on Earth.
In this lesson, you will learn about the natural and anthropogenic (human-induced) causes of soil erosion.
This lesson helps you understand how to recognise inequality and what you can do to address it.
This lesson introduces the positive and negative consequences of living in tectonically active areas.
This lesson presents how the conductivity of graphite is influenced by size, pressure, and the composition of the pencil lead. You will also learn about the basics of resistance and electrical conduction.
Trees can reduce the temperature of their surroundings through shading and evaporation. This natural, energy-efficient cooling power can be as effective as air conditioning.
Operating systems do not all work in exactly the same way, but they have common principles. Understanding these is important for efficient and secure use.
You will explore Settings and learn about the important options that allow you to confidently control how your computer works and customise its use.
Data size is crucial because it determines whether it fits in storage and how long it takes to transfer or process it.
Learn about the different calendars and celebrations in the Arabic-speaking world.
In this lesson, you will learn how to bring physics to life with a pencil, measure current and voltage, and playfully verify fundamental laws.