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Material World

Scuba divers

Boyle's Law

Backgrounders

Learn about the theory of Boyle’s Law and explore examples of Boyle’s Law in everyday life.

Hot air balloons

Charles' Law and Gay-Lussac's Law

Backgrounders

Learn about the theories of Charles’ Law and Gay-Lussac’s Law and explore examples of these laws in everyday life.

Pressure gauge

Kinetic Molecular Theory of Gases

Backgrounders

Learn about the Kinetic Molecular Theory of Gases as well as about the units and tools used to measure gases.

Woman blowing up a balloon

Avogadro and the Ideal Gas Law

Backgrounders

Learn about the theory of Avogadro’s Law and the Ideal Gas Law and explore examples in everyday life.

Scott Kelly et Terry Virts inspectent le système d’élimination du dioxyde de carbone de la SSI (Photo via Wikimedia Commons)

Carbon Dioxide on Earth and on the ISS

Backgrounders

Carbon dioxide is an important part of the air on Earth and in space. What is carbon dioxide? How is it measured? How can it affect us mentally and physically?

Smoke from a crop-duster shows wake turbulence

What is Air Turbulence?

STEM Explained

Learn about the science behind the four main causes of turbulence.

A variety of lava lamps

Lava Lamps

STEM Explained

Lava lamps are very interesting to look at. But they are also interesting examples of buoyancy, heat transfer and solubility!

Adult and children looking through telescope

The Optics of Telescopes

Backgrounders

Learn about telescopes, how they work & why they're important to astronomers.

Why is rain not salty?

Why is rain not salty?

Hands-on Activities

Make a model of the water cycle and find out how water moves around on planet Earth.

Pitcher holding a baseball

Why Do Curveballs Curve?

STEM Explained

Bernoulli’s equation is key to understanding why curveballs curve.

People playing ice hockey

Why Do Ice Rinks Stay Frozen?

STEM Explained

Every ice rink is an example of molecular bonding and gas laws at work!

Two faces each with one eye visible

Why do we need two eyes to see?

Hands-on Activities

Ever wondered why we have two eyes (and not one, three or more)? Find how your two eyes work together in this hands-on activity.

Why is everything so small down there?

Why is everything so small down there?

Hands-on Activities

Explore how we see things far and near and from different angles. It's all about perspective!

Sound waves

What is Sound and How do we Hear it?

Backgrounders

Learn how sound travels in waves and how it is measured in this backgrounder.

The water cycle

What is the Water Cycle?

Lessons

Students develop the skills of observing and recording observations as they explore how the water cycle works.