The world is vast and full of wonders. As humanity continues to learn about the things around us, we also gain a profound understanding of the endless progress of science. For example, penguins are not only found in Antarctica; they can also be found on the equator. Ball lightning exists in the world, and colorful snowflakes fall all over the globe. All of this could very well redefine your understanding of science. Let's test your scientific abilities!

1. The toughest muscles in the human body

The tongue is one of the most resilient muscles in the human body. It is a collection of eight different muscles that intertwine to form a flexible, cavity-like structure. In a sense, the human tongue is quite similar to an elephant's trunk. Furthermore, we all know that muscles need exercise, and you use your tongue extensively every day.

2. The sex of crocodiles

As a natural human being, one's sex is determined from birth, as is the case with most creatures in nature. However, in reptiles like crocodiles, the eggs of the Chinese alligator develop into different sexes depending on the temperature. Below 30 degrees Celsius, they develop into females; above 34 degrees Celsius, they develop into males. Incidentally, the sex of oysters, a delicacy in the eyes of humans, is also related to temperature changes.

3. Television sound and picture

When you turn on the TV, do you hear the sound first or see the picture first? Actually, you should hear the sound first. The sound and picture arrive at the same time with the radio waves, but the picture will appear on the screen a few seconds later. This is because the picture tube needs a few seconds to heat up before it can work properly.

4. The speed of a quartz clock

Quartz clocks do not keep a constant speed; they generally slow down in autumn and speed up in spring. This is because the Earth's rotation is not uniform, and scientists suspect that the distribution of polar ice caps and ocean currents influence the Earth's rotation. Quartz clocks remain excellent timekeeping tools; a well-made quartz clock will have an error of no more than one second over 30,000 years.

5. Sneezing

No one can sneeze with their eyes open, and you shouldn't try to, as it could damage your eyes or even cause your eyeballs to pop out. When you sneeze, your facial muscles relax effectively, and there's significant pressure in your lungs, mouth, and nasal cavity. This pressure can cause the expelled air to reach speeds of up to 160 kilometers per hour. If you sneeze with your eyes open, the pressure could potentially damage your optic nerve.

6. Flowers bloom before leaves appear.

Plants like wintersweet and peach trees bloom before they grow leaves, which is truly an amazing growth cycle.

7. About Earth

The Earth experiences approximately 5 million earthquakes annually, with 260-720 billion meteorites falling to Earth each year. Volcanic eruptions release 600-800 million cubic meters of volcanic ash annually, and the Earth receives 500,000-550,000 cubic meters of rainfall annually. There are also 300,000-350,000 lightning strikes annually.

8. Lighter and Matches

Lighters seem to be more technologically advanced than matches, but in reality, lighters appeared two centuries earlier than matches. Lighters were invented in the 16th century, while matches were not invented until the 18th century.

After reading these 8 science facts, do you now have a better understanding of yourself?