Energy and the environment - Years 5-8. ABC online education - ABC Splash. Digging up Earth's treasures - Science (7) 00:00:02:16NARRATOR:From earliest times, all human cultures have dug things out of the ground.
It started with flint for tools... ..and soon progressed to stone for building, metal for weapons and armour... ..gold and silver for coinage and, most dramatically... ..sulphur and saltpetre for gunpowder. The truth is that mining and smelting and generally digging in the dirt have been absolutely vital to humans from before civilisation. Now, in the present day, not only are cities and almost every product we use derived from the ground, so is almost all our energy. Gone are the days of muscle power. ABC online education - ABC Splash. Penguins starving to death is a sign that something’s very wrong in the Antarctic.
The awful news that all but two penguin chicks have starved to death out of a colony of almost 40,000 birds is a grim illustration of the enormous pressure Antarctic wildlife is under.
The causes of this devastating event are complex, from a changing climate to local sea-ice factors, but one thing penguins, whales and other marine life don’t need is additional strain on food supplies. Over the next year we have the opportunity to create an Antarctic Ocean Sanctuary – the largest protected area on Earth – which would put the waters off-limits to the industrial fishing vessels currently sucking up the tiny shrimp-like krill, on which all Antarctic life relies. In 1990, the Voyager 1 space probe looked back at Earth from six billion kilometres away and took a historic selfie of our solar system.
What it saw, according to renowned astrophysicist Carl Sagan, was a “pale blue dot”. Sea predators unite to devour sardine shoal. Teaching Forces - Misconceptions and how to overcome them - Neil Atkin. Forces and how to teach them A great Newton’s third law experiment to try below – more ideas on my Forces Pinterest page here One of the many problems faced by physics teachers is that the terminology we use in a very precise way is often used very arbitrarily in the ‘real world’ Forces is a bad one; “She forced me to do it”“It was an act of force”A force of natureThe armed forces Possibly the worst of the lot when it comes to confusing the concepts –“May the Force be with you “ !
The science of macaroni salad: What's in a mixture? - Josh Kurz. A mixture is a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other.
Most natural substances are mixtures. Here's the basics of mixtures. Check out this website for a short explanation of the differences between elements, compounds, and mixtures. Still uncertain? The 2,400-year search for the atom - Theresa Doud. Ernest Rutherford Although Ernest Rutherford is well known for his discovery of the nucleus, he did a lot of other research and experiments into topics other than the atom.
He started his career studying electricity and magnetism and it wasn’t until he left his home of New Zealand and moved to Cambridge, England that he started working with the atom. Working under J.J. Thomson at Cambridge University, Rutherford investigated electrical conduction in gases using X-rays. When radioactive atoms were discovered in the late 1890s, he switched his experiment to use radioactivity instead of X-rays to initiate electrical conduction in his gases. In 1911 after returning to England, Rutherford conducted his most famous experiment with alpha particles and gold foil which lead to his discovery of the nucleus. Where are the Electrons? After Rutherford discovered the nucleus, Neils Bohr (another of J.J. POLARITY, COHESION and ADHESION. Water is truly an amazing substance.
Check out the water properties section on the United States Geological Survey (USGS) website to find out more about what makes water so special.Click on this link to access the National Science Foundation’s “A Special Report: The Chemistry of Water” where you can click through a series of links to get more in-depth information on water chemistry.Check out this link for some quick and interesting experiments that illustrate some of the properties of water discussed in the TED-Ed animation.Click this link to complete a virtual lab that examines some of the properties of water.
Lesson Starter Movies. Life in the Freezer. Graphing Stories - 15 seconds at a time. How much water is there on Earth, from the USGS Water Science School. All Earth's water, liquid fresh water, and water in lakes and rivers View full size The Earth is a watery place.
Levitating Barbecue! Electromagnetic Induction. Michael Faraday - My Favourite Scientist. The Future Of Transportation Depends On Magnetic ... What is a Force? Water and You: The Water Treatment Process. Michael Pritchard makes filthy water drinkable. "Drinking from the sea", explore how and why sea water is desalinated. Cheese Omelet. SydneyWaterTV. Water and You: The Water Treatment Process. Water Quality Testing Lab with Sonia Hesp. How To Wash Your Hands In Space. Wringing out Water on the ISS - for Science! Teaching the Hypothesis. Update: Much of the explanation below I’ve now published in The American Biology Teacher – Strode, P.
K. (2015). Hypothesis Generation in Biology: A Science Teaching Challenge & Potential Solution. The American Biology Teacher 77:500-506. In science, there is no one scientific method. In fact, we practice scientific methodology in various ways. Scientific methodologies are also not always hypothesis-driven. Stile. How to Balance Chemical Equations: 10 Steps. 10 Amazing Science Tricks Using Liquid! An original Apple 1 computer built by Steve Jobs is up for auction and could sell for £500,000. An original Apple 1 computer has come up for auction, and the starting bid is almost a quarter of a million pounds.
The Register reports that high-end auction London house Christie’s is selling off the vintage device, which was launched in 1976. Just 200 were ever made, and they were hand-built by Steve Jobs and Steve Wozniak, “but only a quarter of those still exist,” says the auction house in the listing. The starting bid is £240,000 ($US370,000), with 13 days left — but is expected to go for considerably more than that. Christie’s estimates the final price will be between £300,000 ($US464,000) and £500,000 ($US773,000). It’s part of Christie’s “Seven Centuries of Science” auction, which is “a curated group of scientific instruments that span the centuries from 1300-1976.
Buyer beware, however: The machine hasn’t actually been turned on since 2005. As an added bonus, the device comes “with the extremely rare first manual issued by the Apple computer company.” 100,000 Stars. Complexity.zone - AR/VR Solar System for Google Cardboard. DuckDuckGo. Under water explosions and fluid dynamics.
Amazing Water & Sound Experiment #2. Year 7 Living World. Year 7 Chemical World. Year 7 Physical World. Year 7 Earth and Space. Electric Flame. DuckDuckGo. Year 7 Living World. Year 7 Chemical World. Year 7 Physical World. Year 7 Earth and Space. Year 8 Living World. Year 8 Earth and Space. Water Molecule Model Building Activity. Here is a simple activity to help students learn about water’s polar nature.
Students build models of a water droplet while indicating hydrogen bonding between water molecules. Students also use paper cut-outs to demonstrate the ability of water to dissolve ionic compounds. Water Molecule Model Building Activity I have also included links to several short episodes of a series from the National Science Foundation called Chemistry Now. These can be helpful during a review of biochemistry. If you like this activity, then you might also like these biochemistry review activities with interactives from Concord Consortium’s Next Generation Molecular Workbench. Atom-Bill Nye. Introduction to Inquiry Learning.
Excerpted from the YouthLearn Guide and Website, visit www.youthlearn.org for more on inquiry and project-based learning. A (Somewhat) New Approach to Educating and Inspiring Kids Inquiry-based learning is not a new technique—in fact, it goes back to education philosopher John Dewey—but it does stand in contrast to the more structured, curriculum-centered framework of today's schools. Asking questions is at the heart of inquiry-based learning. The goal is not to ask just any questions, of course, but ones that youth honestly care about. Your role is to guide the youth in finding the answers themselves and encourage them to ask new questions along the way. Google. LAB SAFETY Video - I Think School.com. LAB SAFETY Video - I Think School.com. Lab Safety for 7th grade Science. LAB SAFETY Video - I Think School.com. Soap Souffle #190.