Your skin is a barrier from harmful things in the environment. When skin becomes damaged blood quickly clots ( thanks to platelets in the blood ) around the damaged area to form a dry crust, called a ...
Science Questions
What is Respiration
Respiration is a chemical reaction that is fundamental to all living things. It happens in every cell of every plant and animal.Respiration is the reaction between glucose (from food) and oxygen ...
What is the Maillard Reaction?
The Maillard reaction ( often called the browning reaction ) is what's responsible for the browning and aroma of foods as they cook. In very simple terms it is a reaction between amino acids ( ...
What is the difference between mass and weight?
Weight and Mass can be very confusing, but very simply:Mass is a measure of how much matter an object is made up of. Mass remains constant. The mass of an object on the moon is the same as on ...
What is a Goldilocks Planet?
If a planet is too close to its sun, it's too hot for life as we know it, too far away and everything is frozen, but around each star there's a Goldilocks Zone where there is the potential for water ...
What causes the phases of the moon?
You've probably noticed that the moon seems to change shape over time. This is because the sun only lights up one side of the moon, the other side is dark. As the moon orbits the Earth different parts ...
What is the Nitrogen Cycle?
Nitrogen is an essential element for living organisms as it's needed to make proteins for growth and repair and other biological functions. Nitrogen moves through the air, soil and living organisms ( ...
What is the Archimedes’ Principle?
The Archimedes' Principle is a scientific law which explains why some objects sink and some objects float. Archimedes was one of the world's greatest scientists. He was a mathematician, inventor, ...
Why is the ocean blue
The ocean looks blue because of how it absorbs sunlight.Water absorbs the longer wavelength colours at the red end of the light spectrum and the short wavelength violet and ultraviolet light. ...
What is the Summer Solstice?
The summer solstice is the longest day of the year when the Earth's North Pole is tilted closest to the sun. There are two solstices each year. One in June and one in December. The time of the ...
