heat

Home/Tag: heat
16 08, 2017

What is friction? Definition of friction

By |2019-06-17T15:26:30-07:00August 16th, 2017|Physics|0 Comments

Definition of friction: Hands rubbing together is a kind of friction Definition of friction Friction is what happens when any two things rub against each other. These can be solid things, like your two hands rubbing together. A friction project Friction and food coloring Definition of inertia All our physics articles More examples [...]

16 08, 2017

What is a photon? Physics of light

By |2019-10-15T10:22:01-07:00August 16th, 2017|Physics|10 Comments

Photons - Sunshine breaking through the clouds. When did the first photons appear? A photon is a tiny little particle of light, far too small to see individually. All light is made of photons (FOE-tahns). The earliest photons probably appeared about fifteen billion years ago, during the Big Bang. What's the Big Bang? What are [...]

7 08, 2017

Emilie du Chatelet – European philosophy

By |2019-05-18T09:08:25-07:00August 7th, 2017|Modern Europe, Philosophy|0 Comments

Emilie du Chatelet, a French philosopher in the 1700s Did Emilie du Chatelet go to school? Emilie du Chatelet's rich father, who was interested in literature and science, hired tutors to homeschool her, instead of sending her to a convent school. She learned Latin, German, Greek, and Italian, as well as math and science. [...]

3 06, 2017

Digestion – Oxidation reaction

By |2019-05-08T05:40:43-07:00June 3rd, 2017|Biology, Chemistry|2 Comments

Kids eating food (thanks to USDA) - get ready to digest food! How do you digest food? When animals, including people like you, digest their food, they use an oxidation reaction to break down big hydrocarbon molecules like sugar into different molecules. Cell digestion Digestive system What is an oxidation reaction? All our chemistry articles [...]

2 06, 2017

What is the strong nuclear force? Atoms and Physics

By |2018-04-16T23:47:52-07:00June 2nd, 2017|Physics|0 Comments

Diagram of an iron atom The protons inside the nucleus of an atom all have a positive electrical charge, so they push away from each other. But the strong nuclear force pulls the protons together. As you might think from the name, the strong nuclear force is very strong. It is stronger than [...]

2 06, 2017

Steam and water – Simple Science – Chemistry

By |2017-06-02T16:05:45-07:00June 2nd, 2017|Chemistry|0 Comments

Swimming in natural hot springs in Iceland When water gets very hot, it boils and turns into steam. This happens at 212 degrees Fahrenheit or 100 degrees Celsius. The water turns into steam because you (or something else: in the picture it is the volcano nearby) is adding energy in the form of [...]

2 06, 2017

What is hydrogen? Atoms and Chemistry

By |2019-09-05T20:42:16-07:00June 2nd, 2017|Chemistry|0 Comments

A diagram of a hydrogen atom Hydrogen is the simplest kind of atom Hydrogen is the simplest kind of atom, and in the very earliest days after the Big Bang hydrogen was the only kind of atom in the new Universe. What are atoms? What's the Big Bang? All our chemistry articles A [...]

2 06, 2017

What is heat? Simple science – Chemistry

By |2019-08-06T22:18:09-07:00June 2nd, 2017|Chemistry, Physics|1 Comment

What is heat? A big campfire throws some serious heat Definition of heat When molecules of any kind of atoms get more energy in them than they had before, they move faster, and we call that "heat". When the molecules move faster, they hit against each other and bounce apart. So they end [...]

1 06, 2017

Friction and food coloring – Heat project

By |2019-06-23T22:25:36-07:00June 1st, 2017|Chemistry|0 Comments

Children playing a running game: a heat project Friction makes things hot You can easily make things hotter than they were before. Start by rubbing your hands together, and you'll see that they feel hot. That's because the energy you used up moving your hands against the friction of them touching each other [...]