Metal is a good conductor of heat, so it quickly draws heat from your hand, making it feel colder. Wood, being a poor conductor, does not absorb as much heat from your hand.

When you exit the pool, the water on your skin starts to evaporate. Evaporation is an endothermic process, which means it absorbs heat from your body, making you feel cold.

Tides on Earth are primarily caused by the gravitational pull of the Moon, along with the Sun’s gravity playing a secondary role.

Gamma rays have the highest frequency and the shortest wavelength in the electromagnetic spectrum.

Concave mirrors are used in car headlights to focus the light into a beam. They converge parallel rays of light to a focal point.

A refrigerator works on the principle of heat absorption, where a refrigerant absorbs heat from inside the fridge and releases it outside, keeping the interior cool.

Diffraction is the bending of light waves around obstacles or through small openings, which causes light to spread out.

Tungsten is used in light bulb filaments because it has a high melting point and can withstand the heat produced when the filament glows.

A transformer is used to change the voltage of an alternating current (AC) without changing the frequency, allowing power to be transmitted efficiently over long distances.

A stretched spring stores potential energy, which is the energy due to its position or configuration.