Weight machines – Pulley project – Physics
Weight machines involve lots of pulleys An exercise machine is a great example of a pulley system. If you can get to a gym or a community center that has [...]
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08, 2017
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08, 2017
Friction project – Physics experiments
Friction project: How much friction do you think a scrubbing brush will get you? Make some friction predictions Which things have more friction? Try to predict which things will be [...]
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08, 2017
What is centrifugal force? Physics definitions
Kids playing tetherball using centrifugal force Who first explained centrifugal force? When something is going straight, it always keeps going straight unless something else stops it or turns it. (The [...]
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08, 2017
What is a photon? Physics of light
Photons - Sunshine breaking through the clouds. When did the first photons appear? A photon is a tiny little particle of light, far too small to see individually. All light is [...]
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08, 2017
What is a light-year? Physics definitions
Light takes years to reach us from these stars far away in space. What is a light-year? A light-year is the distance that light can travel in one year - [...]
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08, 2017
What is light made of? Why is the sky blue?
Rainbow over Amazon river - What is light made of? What is light made of? Light is made of billions of tiny particles called photons. These photons travel from one place [...]
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08, 2017
Building a radio – a physics project
The graphite inside your pencil There's nothing magic about a radio. You can build your own radio out of plain ordinary things you can get at the store. Here's how. [...]
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08, 2017
What are magnets? Physics and electricity
A magnet holding a steel bar - what are magnets? What is magnetism? Magnetism is a force created by electricity, or more specifically by electrons. In any iron atom, there are 26 electrons. [...]
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08, 2017
What is electricity? Physics
What is electricity? A bolt of lightning in the sky What is electricity made of? Everything in the universe is made of atoms. Those atoms are made of electricity. Atoms are [...]
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08, 2017
Magnet project – electricity
Brio trains have magnets at the ends for your magnet project Brio trains and magnetism To see how magnets push and pull each other, get out your wooden Brio trains. One end [...]
