Why do we feel cool when wearing white on a sunny day but feel hot when we wear black?

Have you ever wondered why roses are red and why violets are blue? This should give you the answers. Enjoy :)

Ever wondered how heat travels?

Watch this interesting clip!

heat energy

Heat is the energy that flows from a region of higher temperature to one at a lower temperature.

Work

Oops... sorry everyone. I should have posted this last time before moments.

Conditions for work to be done

1. There is a force acting on the object
2. The object moves
3. The movement of the object is in the direction of the force

kinetic energy

kinetic energy is the energy that a body has due to its motion. All moving objects have kinetic energy.

Example: A girl walking down the street

This video should tell you more! :)

potential energy

Potential energy is stored energy due to a body's position or condition.

This video demonstrates gravitational potential energy. Enjoy! :)

Gravitational potential energy

Gravitational potential energy is the energy an object has because of its position or location. The higher the object is from the ground, the more gravitational potential energy it has, thus, it has more potential to fall

Example: a chandelier hung on the ceiling possess gravitational potential energy

Chemical potential energy

Chemical potential energy is the energy stored in fuels such as petrol and food that can be released through chemical reactions.

Example: We need to eat food to store ourselves with chemical potential energy so that it can be transformed into other types of energy as we carry out different activities like running (converted into kinetic energy)

Elastic potential energy

Elastic potential energy is the energy an object has when it is stretched or compressed.

Example: a stretched rubber band possesses elastic potential energy

The three classes of levers

here are the 3 classes of levers!