Science and Engineering

The SI unit of length is the meter, which is defined as the distance traveled by light in a vacuum in 1/299,792,458 of a second.

The chemical formula for water is H2O, which means that each molecule of water contains two hydrogen atoms and one oxygen atom.

The largest organ in the human body is the skin, which covers the entire body and acts as a protective barrier.

A jet engine operates on the principle of Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction. The engine pushes air backward, which in turn propels the aircraft forward.

The force that attracts objects towards each other is called the gravitational force. It is one of the four fundamental forces in nature.

Photosynthesis is the process by which plants convert sunlight into energy. This process takes place in the chloroplasts of plant cells.

Jupiter is the largest planet in our solar system. It is a gas giant and is composed mostly of hydrogen and helium.

An atom is the smallest particle of an element that retains all of its chemical properties.

Weathering is the process by which rocks are broken down into smaller pieces by the action of wind, water, and other natural forces.

A motor is a device that converts electrical energy into mechanical energy.

Heat can be transferred from one object to another by conduction, convection, or radiation.

Drag is the force that opposes the motion of an object through a fluid.

Evaporation is the process by which a liquid changes into a gas.

Condensation is the process by which a gas changes into a liquid.

Melting is the process by which a solid changes into a liquid.