Science Experiments, Stories, Games, Projects, Videos and More for Kids (and adults too!)
Aside from the conventional fixed pulley used in a flagpole, pulleys are used in other machines include the following:
Bicycle
The pulley in a bicycle uses a chain. It has a metal wheel with teeth where the chain will mesh. The function of the pulley in a bicycle is to move the bicycle forward.
-written by [...]
We got together with one of our first course takers to show everyone how pulleys work… without using pulleys!
A pulley is a simple rope and wheel with a groove that can do big jobs. Pulleys are important because they are involved in many machines, big and small. The written concepts of the lever and pulley date back to 200 B.C. and Archimedes, a Greek mathematician.
Rick and The Little Guy visit Dr. Michelle Yasson from http://holvet.net to talk about fleas and tapeworms and other gross things.
Lots of good stuff coming up!
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Long ropes
Pulley and pulley
Lift the heaviness
Well, that was a disgusting week for us to get through… Parasites = Yuck.
Next up… Pulleys! Pulleys are everywhere you look and we’ll get into the details of these simple machines.
But first let’s recap some of the other science stories we found this week:
Not all parasites are completely harmful, and it is always a good idea to see a doctor if you are concerned. You are probably better off without them but some may be good for you in small amounts.
Amanda went to visit Tony from The Breath of Life. He gave a great explanation of internal human parasites (ewww, gross) for us.
This experiment was written by 12 year old Michael R. from Florida, USA!
Daredevil egg
Background:
This experiment is used to observe another Newton’s second law, according to which the force applied is the product of mass times the acceleration produced in the object.
Problem:
To verify Newton’s Second Law by using a placemat, tube and egg.
Materials:
An [...]
Parasites are small organisms; they are often too tiny to be seen with the naked eye. However, others parasites like mites and ticks can be visible. There are many types of parasitic fungus and parasitic insects.
A fungus among us
A parasite too
Bad for bugs
Let us look at a brief history of water pollution, where it came from, and what are the factors that lead to water pollution.
Sometimes what looks like clean water isn’t clean at all. If it looks dirty because there are some minerals in it it may not taste good but might be perfectly OK to drink. It might also be poisonous even when completely clear and odor free.
To clear this up (pun intended) Rick got a lesson in water quality from Michael Christophetes from The Granite Inspection Group (http://www.gigrp.com/). Mike is a home inspector and tests people’s drinking water often. In this short video he explain’s to Rick the what, where and how of what he usually finds out along the way… and then Rick drinks something that looks nasty.
Don’t do that at home unless you have professional water testing equipment!
-Enjoy!
As air moves it’s pressure changes. Changes in air pressure are what makes weather happen and airplanes fly.
Air moving quicker over the top of an airplanes wing creates lift. In this experiment we’ll demonstrate this useful property of physics.
Nasty and Smelly
Bad for everything
Don’t drink that!
Water pollution is the contamination of water bodies such as lakes, rivers, oceans, and ground water. This contamination may harm humans, animals and plants depending on the contaminated water. If you want to avoid sickness coming form contaminated water, you may need to ensure that you will decrease water pollution from your home.
Newton’s third law states that every action has equal and opposite reaction. We will put this law to test in this experiment and check its validity.
Kids are all reeling from the excitement of the Olympic Games these last few weeks, but can they relate any of that to science? Absolutely!
Aspiring athletes, or students struggling with a scientific concept, may find that the perfect demonstration is sports. Many kids love sports, and sports are science. Every skill, movement, victory, and loss [...]
Solar Power is power that can light up your house, heat your pool and do other power generating functions with the energy that comes from the sun. So If the power generated comes from the sun, does this mean that you will not have power to light up your house during the night or during [...]
