Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won't last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy...

If we want to establish a colony on the Moon, coming up with enough water is a huge challenge. Scientists have long suspected there might be water hiding on the lunar surface. Were they right? Plus, some quick recovery work led to...

In this video Paul Andersen explains how the gravitational field strength is directly related to the mass of the object and indirectly related to the square of the distance from the center of mass. The equation for gravitational field...

You've had a lot of fun learning new stuff with us on SciShow Kids, but have you ever wondered how and why you remember all that awesome knowledge? Join Jessi and Squeaks to learn about how your brain helps you learn, and way more!

Forces are pushes or pulls on an object. Forces can be determined by measuring the motion of an object. If an object accelerates then a force is present.

How much water should you drink every day? Not as much as you've been told. This summer, like many summers before it, has seen a rash of articles warning us not only that is dehydration is dangerous, but that it is also ubiquitous. Real...

Pupil outcome: I can use whole kilograms and grams to measure the mass of objects. Key learning points: - 1 kg is equivalent to 1000 g. - The mass of heavy objects can be given in whole kilograms and grams. - We can use our knowledge of...

Will this be the last video I make about SI units? Quite possibly. There's something about being so precise and defining the systems within which science works. When we can more accurately and routinely measure a kilogram, a mole, a...

This video explores the intricacies of precision mass measurement, from the standard kilogram to forces as small as 10 micrograms. It delves into the challenges of subdividing large masses and the limits of conventional methods, like...

The decibel is used to measure sound levels. It is represented by dB and is widely used in signals, communication, and electronics. The term decibel can be used to express an absolute value or a change in value (+1 dB or -1 dB). Decibels...

Gasoline (petrol) and diesel are extracted from the same raw material crude oiland pass through various levels of refinement. Yet, they have different thermal characteristics, making them suitable for very different purposes. For...

SI is the International System of Units.
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What is a horsepower? How many horses would it take to power your car?
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Find out the principles underlying some of the most prominent Fair Trade schemes and how these can redress unequal relationships between small producers and global buyers. Human Geography - A Changing World - Learning Points. The...

The average carbon footprint of a person in the US is 16.5 tons –TONS. So, what can you actually do decrease this number and make a meaningful difference?

In this video we take a look at the technical data of how heat pumps work. Covering the basics, showing the typical system along with the main components and an animated drawing explaining its operation in both cooling and heating mode...

The video "Metric Measurements: Mass" explores using metric units to convert measurements of mass.

Converting Metric Measurements of Mass explores measurements of weight using the metric system.

This is a review of all of the dimensions used in AP Physics C - Mechanics. Okay, maybe it doesn't cover some of the basic dimensions, however, if you don't know that linear velocity is in furlongs per fortnight, then I probably can't...

In this video, the concept of matter is explored. The video also introduces the idea of physical properties, which can be observed or measured without changing the makeup of the matter. This video is part of the 9-part series, Describing...

The watt balance lets researchers determine the mass of an object indirectly by determining two quantities: the strength of the magnetic field, and the current running through a coil of wire.

In this video, students learn how to solve word problems involving mass and volume using multiplication and division. The video provides examples and explanations of the units of measurement for mass and volume, as well as key words to...

This video teaches students how to estimate the mass of objects using reasoning and benchmark objects. It explains that mass is the amount of matter in an object and can be measured in grams and kilograms. Through examples and...

This video provides a clear and concise explanation of the two commonly used systems of measurement: the English system and the metric system. It highlights the units of mass in each system, pounds and ounces in the English system, and...