Hot Science Experiments How-Tos — Page 26 of 30 « Science Experiments

How To: Measure voltage with a multimeter

This is a guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure voltage using an electronic labs kit. This video guides the student through the proper techniques for measuring voltage with a multimeter.

How To: Measure current with a multimeter

This guided hands-on laboratory activity to help a student understand the proper and safe use of a multimeter to measure current using an electronic labs kit. This video guides the student through the proper techniques for measuring current with a multimeter.

How To: Use voltage and current

This two-part video describes voltage, the potential difference or "pressure" that pushes electric charges through conductors. After watching this, you'll know everything there is to know about voltage and current.

How To: Use the right electrical wires

This video is about electrical wires. It describes common types, configurations of wire, and wire terminology. It explain the gauge system of rating wire size (diameter), circular mils, current capacity, and others.

How To: Make electrical circuits

This video introduces the concept of an electric circuit and how electrons flow through the wire. It describes the difference between an open and closed circuit, and the importance of continuity.

How To: Make polymers in the kitchen

Caroline and Val from New Scientist make plastic from milk and vinegar. Sure it likes like food at first, but leave it for a couple days, and it will be plastic. Just try it for yourself.

How To: Extract the iron from your cereal

Ivan and Mick from New Scientist show us how to get the iron out of fortified breakfast cereal. You won't believe how much you can find!

How To: Perform electrolysis with pencil lead

See how to do electrolysis of water with graphite (lead from a pencil). The positive side has oxygen bubble, and the negative side has hydrogen bubble. Just get a 9V dry cell battery.

How To: Perform electrolysis, the cool way

See the electrolysis of water (baking soda dissolved) with copper wire. The negative side has hydrogen bubble, and the positive side has oxygen bubble. Watch the positive side as the water turns blue.

How To: Get liquid from a bowl into a glass with just a candle

This is an amazing, scientific, rise effect with just a candle, a cup, and a Coke. Anybody can do it, so why not?

How To: Turn a penny into gold

These guys make pennies change color in class. No, it's not real gold, and by the way - no, it's not real gold. Just watch and see how to do real alchemy, like you would in chemistry class.

How To: Make a miniature volcano model

This video shows you how to make an extremely realistic, miniature volcano. You can get the Ammonium Dichromate off of eBay for around $10 a pound; a pound will easily yield over 25 volcano demonstrations. This easy DIY pyrotechnic demo will amaze any audience. Don't you just love chemistry?

How To: Create fire from a pair of sunglasses

Dr. Kiki creates fire from a pair of glasses, Moujan transforms an empty wine bottle into a lamp, and Heather reveals an underground band who hails from Tokyo!

How To: Make your shampoo leap with the Kaye effect

Scientists of the University of Twente in the Netherlands won a prestigious place in the 'Hall of Fame' of videos about fluid-in-motion. They have made a video of leaping shampoo, in which they explain the so-called Kaye effect. Scientifically interesting, but also of great aesthetic beauty! Get out your shampoo and try it yourself.

How To: Fold a model rocket parachute

Lots of newbies ask about this. Don't know why, but okay, here's how to do it -- folding a parachute for a model rocket.

How To: Create a magnetic field for sifting through the sand

It's time for a 'science is fun' video! Bar magnets put in a DVD case show how combined magnetic fields can be used to hold another magnetic object in place, even when it's an inch or so away from the actual magnet. You can even get mangnetic sand (iron, etc.) from the beach!

How To: Check your own DNA

A science experiment you can do at home to gather a visible cluster of your own DNA. You need salt, dishwashing liquid, denatured alcohol, measuring tool, spoon, small glass/test tube/vodka glass, magnifying glass. Check your own DNA.

How To: Cut a glass bottle with string

A trick for cutting a glass bottle. Cut a glass bottle with string.

How To: Experiment with air pressure using a water glass trick

Steve Spangler shows a science experiment in which a glass of water is able to suspend a card in mid air.

How To: Make an ocean in a bottle

Learn how to make an ocean in a bottle. This video shows how to make a Cartesian diver. It is named after Rene Descartes, a famous French scientist, mathematician, and philosopher. Make an ocean in a bottle.

How To: Demonstrate cooling by evaporation

A lab exercise that demonstrates how evaporation of water lowers the temperature. Also, how surface area affects the rate of evaporation.

How To: Do a demonstration of the Doppler effect

This video is an excellent example of how to demonstrate the doppler effect in the classroom.

How To: Make 3 dimensional projections in a classroom

Learn a technique to project 3-dimensional surfaces floating in the air in a classroom.

How To: Suck a hard boiled egg into a bottle

Learn how to suck a hard boiled egg into a bottle using air pressure.

How To: Make clouds in a bottle

Learn how to make clouds in a bottle with this great science experiment.

How To: See infrared light

Infrared light is just outside our visual range. Here is how to use a typical camcorder to see the infrared light from a remote control.

How To: Boil water with ice

A classroom demonstration of the effects of lowering the air pressure on the boiling point of water.

How To: Crush an aluminum can with air pressure

Learn how to crush an aluminum can using regular atmospheric pressure with this classroom demonstration.

How To: Make a topographic profile

Demonstration on how to make a topographic profile for an Earth Science Lab.

How To: Do this quick foot experiment to trick your brain

This week's experiment has made the rounds through the Internet as a strange trick, but there is science here too. We are going to use the science of complex systems to confuse your body. To try this, you will need:

How To: Make a mini hot air balloon with a tea bag

In this video learn how to make a mini hot air balloon. This experiment is great for kids.

How To: Light a bulb in a microwave or near powerlines

In this video watch a simple experiment of lighting a bulb and a fluorescent tube. Makes you wonder if being so close to power lines radiates people. Hmmmmmmm

How To: Rip a Penny in Half

No, we're not lying. But before you try and tear a plain old penny in half, you should probably watch this video first or you may hurt your fingers. While ordinary pennies are very, very difficult to rip, if you get rid of the zinc core you are left with only the thin copper shell, which is itself very easy to tear apart.