Quatr.us experts wrote all of these simple, free articles. Click on any link to read the full article.
What is time?
Laws of Motion
- Acceleration
- Gravity
- Inertia
- Mass
- Momentum
- Friction
- Centrifugal Force
- Newton’s First Law
- Newton’s Second Law
- And Newton’s Third Law
Electricity
Space
- Big Bang
- Nebula
- Galaxy
- What are stars made of?
- Types of Star
- Main Sequence Star
- Brown Dwarf
- Supernova
- Black Hole
- What is a comet?
- Meteors – Shooting stars
- Planet
- Neptune
- Uranus
- Saturn
- Jupiter
- Mars
- Venus
- Mercury
- How old is the Earth?
- Moon
- What’s the sun made of?
- Eclipse of the Moon
- Eclipse of the Sun
Weather
- Why do we have seasons?
- Where is the equator?
- What is the atmosphere?
- Why is the sky blue?
- What causes wind? (Hot air rises)
- Types of clouds
- Stratus clouds
- Cirrus clouds
- Cumulus clouds
- Nimbus clouds
- Why does it rain?
- What is snow?
- Measuring temperature
- Thunderstorms and lightning
- Tornadoes
- Hurricanes
Sound
Light
Radioactivity
Simple Machines
- Lever
- Types of levers
- Inclined Plane
- Screw
- Wedge
- Examples of wedges
- Wheel
- Pulley
- Movable pulley
- Work
Physics Projects
- Earth Dance
- Lunar Eclipse
- Flashlight and Orange
- Observing Mars
- Meteor Shower
- Comet craters (Second law of motion)
- Moon Projects
- Water Rainbows
- The Morning Star
- Pushing Blocks
- Weight Machine
- C-Clamps
- Doorstops and Knives
- Brio Trains and magnets
- Electromagnet
- Shoebox Guitar
- Ear Popping
- Nuclear fission project
- Lego project – nuclear fusion
- Building a radio
- Steam Clouds
- Kleenex Balloon
- Sky is blue project
- Static Electricity
- Rainy Weekends?
- Graphing Sunrise
- Sunny but Cold
- Thermometers
- Sunburns
- Tornado Bottle
Bibliography and further reading about physics:
Physics for Every Kid: 101 Easy Experiments in Motion, Heat, Light, Machines, and Sound, by Janice VanCleave (1991). Ages 9-12. All good activities.
Usborne Illustrated Dictionary of Physics, by Corinne Stockley (2007). Ages 9-12. Not, as you might think, in an alphabetical format.
Physics: Why Matter Matters!, by Dan Green and Simon Basher (2008). Ages 9-12. A good intro – NOT high school level physics.
