Which famous experiment proved that the Earth orbits the Sun rather than the Sun orbiting the Earth?

Which scientific instrument is used to measure very small distances such as the diameter of a wire or thickness of a sheet?

Which simple machine uses a grooved wheel and rope to lift heavy objects with reduced effort?

Which blood component is primarily responsible for clotting?

Which organ in the human body acts as a reservoir for blood and helps filter out old or damaged red blood cells?

Which renewable energy source uses moving air currents to generate electricity through turbines?