Tag Archives: science

Science is Fun: Oil and Water Experiment

Science is fun. When a child is able to put their hands on something and find out how it works and why it works they learn so much better. What is more exciting than trying something out on your own? This month we want to share a fun science experiment that will allow your kids to discover the difference between oil and water.

Thank you to Growing a Jeweled Rose for creating such a fun and unique way to interact with water and oil. This new experiment will allow you show your kids the property differences of oil and water with a glowing experiment. You and your kids will be excited to create a glowing magical world with oil and water.

Head on over to Growing a Jeweled Rose to learn exactly how to create this magical experiment at home.

Check out just why oil and water are so different below. While you and your kids create the magical glowing world you can share all your knowledge of oil and water and their similar yet different properties.

Oil and Water:

Oil and water are two liquids that are immiscible, meaning they will not mix together. Liquids tend to be immiscible when the force of attraction between the molecules of the same liquid is greater than the force of attraction between the two different liquids.

Although this experiment uses the same volume of oil as water, the two liquids have different masses and therefore, different densities. Density is a measure of how much of a substance is contained in a specific volume of liquid. A liquid that is less dense than water will float on the water; a liquid that has a greater density will sink.

To gain an understanding of density, think of two zippered plastic bags of the same size (same volume). Imagine that one bag contains 10 marbles and the other 20 marbles. The bag containing 20 marbles is denser than the bag containing 10 marbles because it contains more material – even though it is the same material. This analogy describes the relative densities of different concentrations of the same substance.

Also, imagine that there is a third bag containing 10 very large marbles. The volume of the material is the same, the number of molecules (marbles) are the same but again, the bag of large marbles contains more material – it has a greater mass and so a greater density. This analogy represents the experiment above since two different materials are used.

The objects added to the container will float at different levels according to their density. If the density of the object is similar to that of water, the object will float in the water. If similar to the oil, the object will float in the oil.

What does it matter?

Getting oil and water to mix is at the very heart of cleaning dishes and clothes. A lot of agents that make dishes and clothes dirty are greasy or contain oil. Water alone is not attracted to these compounds. However, because a detergent has one end that is attracted to oil-like molecules, detergents tend to bind to dirt, grease and oil. The other half of the detergent binds to water molecules, allowing the soiling agent to be washed away.

 

STEM activity: Build a Solar Oven

STEM is quickly becoming my favorite educational subject. It is so much fun to create these fun projects at home with my kids. We all feel as if we are playing and building when in reality I am helping to stimulate their skills in Science, Technology, Engineering, and Mathematics. It is an important subject in today’s world. So many of our important careers have STEM components. Colleges look for STEM based backgrounds and even supply STEM based scholarships.

Schools are quickly trying to create a broader base of classes and programs available in these subjects. But with defunding of public schools, many are unable to incorporate these programs. As parents, it is our job to fill in the gaps with extracurricular activities, groups, and even working with our kids at home. It only takes a little parental interest to make a project that seems boring and make it into a fun and interactive game.

We have been trying to share different STEM activities at least once a month on the blog. Our kids look forward to them. But we also know that parents get busy, and may not have the time to find things like this on their own. We also know that a lot of us pin great ideas to try. Tough we sometimes get so busy we lack the motivation and time to actually follow through. Many of you have told us that when you see our blog posts it reminds you that you can do these things. And many of you do. So we will continue to share in hopes that we can help you to accomplish the things you plan.

This month we want to share this fun STEM project is not only fun, it is also pretty tasty! PBSKids has shared a simple solar oven that can help you and your kids to create S’mores! Simply follow the incredibly easy to follow build a solar oven tutorial and enjoy the treats of your labor. build a solar oven

STEM Activities: Experimenting with Weather and Lightning!

STEM has become such an important part of science in classrooms around the country. It is not only a very important part of our current lifestyle, we use science and technology in nearly every major job now, it is also such an important part of our daily lives. This moths fun STEM activity deals with weather and lightning. Since everyone has to live in the weather, why not take a moment to get better acquainted with how it works and why its important?

This months STEM activity is from Learn Play Imagine, a great blog written and created by Mom Allison. Her little weather experiment is so much fun your kids will want to do this everyday. Not only does he teach us how lightning is made, with her instructions you and your kids can actually CREATE lightning at home.

STEM - Weather and lightning

Allison and Learn Play Imagine shares some incredibly cool insight in to lightning and weather with this experiment. We highly recommend heading over to her page to fully understand the experiment and to see step-by-step tutorial with a Youtube video to give you guidance to complete the experiment in full.

Don’t forget to check out some of Allison’s other great experiments and blogs while you are there.

Check out these 10 myths about lightning for you to share with your kids while you work:

MYTH 1 – LIGHTNING NEVER STRIKES THE SAME PLACE TWICE 
Fact: Lightning often strikes the same place repeatedly, especially if it’s a tall, pointy, isolated object. The Empire State Building was once used as a lightning laboratory, because it’s hit nearly 25 times per year, and has been known to have been hit up to a dozen times during a single storm.
MYTH 2 – LIGHTNING ONLY STRIKES THE TALLEST OBJECTS 
Fact: Lightning is indiscriminate and it can find you anywhere. Lightning hits the ground instead of trees, cars instead of nearby telephone poles, and parking lots instead of buildings.
MYTH 3 – IN A THUNDERSTORM, IT’S OK TO GO UNDER A TREE TO STAY DRY
Fact: Sheltering under a tree is just about the worst thing you can do. If lightning does hit the tree, there’s the chance that a “ground charge” will spread out from the tree in all directions. Being underneath a tree is the second leading cause of lightning casualties.
MYTH 4 – IF YOU DON’T SEE CLOUDS OR RAIN, YOU’RE SAFE 
Fact: Lightning can often strike more than three miles from the thunderstorm, far outside the rain or even the thunderstorm cloud. “Bolts from the Blue,” though infrequent, can strike 10?15 miles from the thunderstorm. Anvil lightning can strike the ground over 50 miles from the thunderstorm, under extreme conditions.
MYTH 5 – A CAR WITH RUBBER TIRES WILL PROTECT YOU FROM LIGHTNING 
Fact: Most vehicles are safe because the metal roof and sides divert lightning around you. The rubber tires have little to do with protecting you. Keep in mind that convertibles, motorcycles, bikes, open shelled outdoor recreation vehicles, and cars with plastic or fiberglass shells offer no lightning protection at all.
MYTH 6 – IF YOU’RE OUTSIDE IN A STORM, LIE FLAT ON THE GROUND
Fact: Lying flat on the ground makes you more vulnerable to electrocution, not less. Lightning generates potentially deadly electrical currents along the ground in all directions, which are more likely to reach you if you’re lying down.
MYTH 7 – IF YOU TOUCH A LIGHTNING VICTIM, YOU’LL BE ELECTROCUTED
Fact: The human body doesn’t store electricity. It is perfectly safe to touch a lightning victim to give them first aid.
MYTH 8 – WEARING METAL ON YOUR BODY ATTRACTS LIGHTNING
Fact: The presence of metal makes virtually no difference in determining where lightning will strike; height, pointy shape and isolation are the dominant factors. However, touching or being near long metal objects, such as a fence, can be unsafe when thunderstorms are nearby. If lightning does happen to hit one area of the fence. For example, the metal can conduct the electricity and electrocute you, even at a fairly long distance
MYTH 9 – A HOUSE WILL ALWAYS KEEP YOU SAFE FROM LIGHTNING
Fact: While a house is the safest place you can be during a storm, just going inside isn’t enough. You must avoid any conducting path leading outside, such as corded telephones, electrical appliances, wires, TV cables, plumbing, metal doors or window frames, etc. Don’t stand near a window to watch the lightning. An inside room is generally safe, but a home equipped with a professionally installed lightning protection system is the safest shelter available.
MYTH 10 – SURGE SUPPRESSORS CAN PROTECT A HOME AGAINST LIGHTNING 
Fact: Surge arresters and suppressors are important components of a complete lightning protection system, but can do nothing to protect a structure against a direct lightning strike. These items must be installed in conjunction with a lightning protection system to provide whole house protection.