There is a lot of magical science knowledge around us. Although this knowledge may seem ordinary, it contains infinite mysteries. Today, we will bring you 12 interesting popular science knowledge, let's explore the mystery together!
1.Why is the sky blue?
This is a very classic question. In fact, the reason why the sky appears blue is because of the scattering of sunlight by the atmosphere. When sunlight hits the Earth's atmosphere, short-wavelength blue light is more easily scattered than other colors of light, so the sky we see is blue!
2.Why are there rainbows?
A rainbow is a beautiful sight in the sky. As sunlight passes through water droplets, the light disperses into various colors in the spectrum due to refraction, reflection, and rerefraction, forming the rainbow we see.
3.Why do bees dance?
Dancing with bees is a very fun act. They convey the message of food by swinging their bodies and shaking their heads, so that their companions can quickly find the source of honey. This dance is called the bee's "swing dance" or "round dance".
4.Why do the seasons change?
The change in the seasons of the earth is due to the angle of inclination between the earth's axis of rotation and the axis of revolution. As the Earth revolves around the Sun, the Earth's northern hemisphere is closest to the Sun in summer, and the Southern Hemisphere is closest to the Sun in winter. Spring and autumn are the transitional seasons.
5.Why is there a **?
*It is caused by the mutual compression, collision or expansion of the Earth's internal plates. When the earth's tectonic plates collide with each other, a squeezing force is generated, and when this force accumulates to a certain extent, it triggers **. And when the plates expand to each other, cracks are generated, forming fault zones, which lead to **.
6.Why are there typhoons?
A typhoon is a system of intense storms that occur over tropical oceans. When the temperature of the ocean surface reaches 265 or above, a tropical cyclone may develop into a typhoon. The occurrence and development of typhoons require a combination of factors such as sea surface water temperature, air structure and topography.
7.Why is there snow?
Snow is an ice crystal formed by the condensation of water vapor in the atmosphere. When water vapor encounters cold air in the atmosphere, it begins to condense into ice crystals, which eventually form snowflakes that fall to the ground.
8.Why are there eight planets in the solar system?
There are eight planets in the solar system because they all orbit the sun because of the sun's gravitational pull. In descending order of distance from the Sun, they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Among them, Pluto was once considered the ninth largest planet in the solar system, but was redefined as a "dwarf planet" in 2006.
9.Why are there auroras?
Aurora is a natural phenomenon that occurs in polar regions. When charged particles in the solar wind enter the Earth's magnetic field, they collide with atmospheric molecules high in the polar regions and excite beautiful light. This glow comes in a variety of colors such as green and purple, which is spectacular.
10.Why are there tides?
Tides are ocean fluctuations caused by the gravitational pull of the Moon and the Sun on the Earth. The phenomenon of the moon's gravitational pull causing the sea water to rise and fall is called "moon tide", while the phenomenon of the sun's gravitational pull causing the sea water to rise and fall is called "sun tide". Tides have an important impact on marine ecosystems and human life.
11.Why is there thunder and lightning?
Lightning is a phenomenon of electrical discharge in the atmosphere. When the charge in the clouds accumulates to a certain extent, an electric spark with an electric field strength that exceeds the air breakdown threshold is generated, forming lightning. Lightning is very powerful and can cause hazards such as lightning strikes and fires.
12.Why is there rain?
Rain is one of the forms of precipitation that is caused by water droplets or ice crystals falling to the ground from clouds. Rainfall occurs when water vapor in clouds condenses into water droplets or ice crystals. Different meteorological and water vapor conditions affect the type and intensity of rainfall.
The above are the 12 interesting popular science knowledge we bring to you. Although this knowledge may seem ordinary, it contains infinite mysteries. Hopefully, this content will spark everyone's curiosity and let's continue to explore more uncharted territory together! Turn the page in 2023