You’re definitely going to want to incorporate these simple science terms into your next science lesson! WHAT IS A SCIENTIST Get them started with a printable science vocabulary word list. It is never too early to introduce some fantastic science words to kids. More Helpful Science Resources SCIENCE VOCABULARY A homemade lava lamp (or density experiment) is one of our favorite science experiments for kids. LAVA LAMPĮxplore physics with common items found around the house. Learn about forces needed to keep a kite up in the air, as you fly your own kite. KITE BUILDINGĪ good breeze and a few materials are all you need to tackle this Kite making physics project at home, with a group or in the classroom. Learn how to create a kaleidoscope for simple physics. HOW TO MAKE RAINBOWSĮxplore light and refraction when you make rainbows using a variety of simple supplies-awesome hands-on science for kids of all ages. Or why is it that sharks don’t sink in the ocean? Learn about how these great fish coast around through the ocean and buoyancy with this simple physics activity.Ĭheck out more awesome shark week activities here. Build your own compass that will show you which way is north. Learn about magnets and magnetic fields with this fun and easy DIY compass project. Science always includes an element of mystery that kids naturally love to figure out! Grab a free printable and learn more about variables and using the scientific method with kids here. The physics experiments below teach you a little about static electricity, Newton’s 3 Laws of Motion, simple machines, buoyancy, density, and more! And with easy household supplies, you can still do awesome physics projects at home on a budget! Use the Scientific MethodĮncourage your kids to make predictions, discuss observations, and re-test their ideas if they don’t get the desired results the first time. Keep in mind that simple physics experiments can involve some chemistry too! Kids are great for questioning everything, and we want to encourage… Like all sciences, physics is about solving problems and figuring out why things do what they do. Physics is all about energy and matter and the relationship they share. Let’s keep it basic for our younger scientists. How did the Universe begin? You might not have the answer to that question! However, you can pull off these cool physics experiments to get your kids thinking, observing, questioning, and experimenting. It's just confusing that when talking about action potentials, we're taught that sodium and potassium are flowing both ways and I want to clarify when they flow in/out and why.Physics is, most simply put, the study of matter and energy and the interaction between the two. This is the opposite of what I had just described in an action potential, which is confusing me.Ĭan you clarify the difference for me please? So I'm assuming that the diffusion of Na+ influx and K+ out of the cell is during an action potential, and the Na+/K+ ATPase function (in pumping these ions in the OPPOSITE direction) is to return to resting membrane potential AFTER the action potential? So this means that K+ flows in and Na+ flows out. Now this is active transport, requiring ATP, therefore pumping these ions against their gradients. Ok, so then there's also the Na+/K+ ATPase. I'm hoping you can clarify something for me? I understand that there's more Na+ outside the cell and more K+ inside the cell this relates to how Na+ initially flows into the cell (depolarization) and K+ flows out of the cell (repolarization) during an action potential, correct? (And this is done via diffusion across the membrane, right?) Relative refractory periods can help us figure how intense a stimulus is - cells in your retina will send signals faster in bright light than in dim light, because the trigger is stronger. This means that the initial triggering event would have to be bigger than normal in order to send more action potentials along. It would take even more positive ions than usual to reach the appropriate depolarization potential than usual. However, the cell is still hyperpolarized after sending an action potential. This is the period after the absolute refractory period, when the h gates are open again. Relative refractory period: during this time, it is really hard to send an action potential. Absolute refractory periods help direct the action potential down the axon, because only channels further downstream can open and let in depolarizing ions. No sodium means no depolarization, which means no action potential. The inactivation (h) gates of the sodium channels lock shut for a time, and make it so no sodium will pass through.
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