To decide which stage follows the egg, observe the life cycle of the specific insect. For many insects, the larva stage comes immediately after the egg, while the pupa stage follows the larva.
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“A Journey through States of Water,” Chapter 8, explains how water changes between solid, liquid, and gas through freezing, melting, evaporation, and condensation. It highlights the water cycle, its importance, and water conservation.
A leap year is a year that has 366 days instead of the usual 365, with an extra day added to February (February 29). This adjustment occurs every four years to account for the additional 0.25 days in the Earth’s ...
The way to separate colors is by using a prism. When white light passes through a prism, it refracts differently based on wavelength, causing it to separate into its constituent colors—red, orange, yellow, green, blue, indigo, and violet—forming a spectrum.
The minimum distance of clear vision for a healthy eye is 25 cm. This is known as the near point of the eye, where objects can be seen clearly without strain. It allows the eye to focus on close objects ...
The mirror used by a dentist to check the teeth of a patient is concave. Concave mirrors provide a magnified image, which helps the dentist see a larger and clearer view of the teeth and gums, aiding in better examination ...
When light transitions from a denser medium to a rarer medium, such as from glass to air, it can internally reflect. This phenomenon occurs due to the change in the refractive index at the interface. Total internal reflection is crucial ...
Supersonic aircraft produce a shock wave called a “sound boom”. This occurs when the aircraft travels faster than the speed of sound, creating a sudden increase in pressure and temperature. The resulting shock wave is perceived on the ground as ...
Doppler effect is related to sound. It describes the change in frequency of sound waves due to relative motion between the source and observer. Approaching objects increase the frequency (higher pitch), while receding objects decrease it (lower pitch), affecting how ...
The ozone layer, located in the Earth’s stratosphere, shields life from harmful ultraviolet (UV) radiation. Human-made substances, such as chlorofluorocarbons (CFCs), contribute to ozone depletion, threatening environmental and health impacts.