Examples of wedges – doorstops and knives
A zipper is a kind of wedge - or a lot of little wedges! For a project about wedges, collect as many different kinds of wedges as you can find around [...]
C-clamps and screws projects – Physics
A c-clamp is a kind of screw - this screw project uses one. Observation of screws Get hold of a screw and a manual screwdriver and try screwing the screw [...]
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 [...]
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 [...]
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 [...]
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 [...]
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 - [...]
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 [...]
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. [...]
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. [...]
