science tips

Science facts about water

Here are a few tidbits about water that we’ll bet you didn’t know. Raindrops are not tear-shaped. Scientists, using high-speed cameras, have discovered that raindrops resemble the shape of a small hamburger bun. About 70% of the human body is water. Life on earth probably originated in water. More than half of the world's animal and plant species live in the water. Almost 75% of the earth is covered in water. The human body needs 2 liters of water a day in our climate; we can last only a few days without water. Most of our food is water: tomatoes (95%), spinach (91%), milk (90%), apples (85%), potatoes (80%), beef (61%), hot dogs (56%). [iframe src="" height="180"]Not sure what's going on here? Check out the instructions here!

All about RFID (Radio Frequency ID) tags

[sc:commonscripts] What is RFID? RFID tags, or Radio Frequency Identification tags, are really quite neat.  These small tags use radio waves to communicate with a "reader", a machine that reads the tag from a distance.  What makes them cool is their size and cost.  Why?  Because new technologies have allowed scientists to build these tags very small - small as a regular price tag on a shirt at the store.  Also, they are cheap to make now too - some only cost a few pennies to make.  This opens up the possibilities of what we can do with RFID technology. For instance, RFID tags can be used in credit cards so we don't have to run them through a reader.  Since they use radio waves, you can simply

Spiders and their strange webs

Why don’t spiders stick to their webs? A spider’s web is one of the strongest and stickiest substances known to man (relatively speaking, it is stronger even than steel). A single spider can spin an intricate web in less than an hour after which, she (yes, we refer to spiders as “she” – ask the boys – they’ll explain why) waits around for bugs and other critters to get stuck in the web so she can devour them. The spider feeds the webbing out of their abdomen and they use a few of their legs to guide the web into place while the other legs are used for pulling far reaching webs into place, feeling for the correct position to attach a web, picking their nose,

Our wonderful Sun – the brightest star in the sky!

[sc:commonscripts] Our Sun is an ordinary star although it is quite large compared to other stars. In terms of “mass”, most stars have less than half the mass of our Sun. You could fit 109 Earths across the Sun. The Romans called the Sun “sol” (as in SOlar). The Sun is about 70% hydrogen and 28% helium. The Sun converts hydrogen to helium at its core. The Sun is not a solid body like Earth. This accounts for why the outer shell of the Sun rotates around its core. In this way, it sort of behaves like planets that are made of gas. At its poles, it rotates once about every 36 days while at the equator (or mid-line) it rotates about every 25

Stuff about tornadoes that will blow you away

[sc:commonscripts] Hey. I see you found this little Science Tip you're good at finding hidden treasures - aren't you). Here's some little tidbits about tornados that Reeko thought you might find interesting... The winds of a tornado whirl in a counterclockwise direction in the Northern Hemisphere and clockwise in the Southern Hemisphere. People in some regions call a tornado a twister or a cyclone. A tornado that occurs over a lake or ocean is called a waterspout Most tornadoes last less than an hour. These storms travel a distance of about 20 miles (32 kilometers) at a speed of 10 to 25 miles (16 to 40 kilometers) per hour. Some tornadoes last several hours and measure up to 11/2 miles (2.4 kilometers) in diameter. They may travel 200 miles