For All We Know Trivia Quiz

Answer: False

The chemical formula of water is H2O. This means that the water molecule is made up of two hydrogen atoms and one oxygen atom. Water is necessary for all living beings on this Earth.

Answer: Due to gravity

Gravity is the force that pulls everything towards the Earth. So if you throw anything upward, it will be pulled back downward due to gravity. The faster you throw something upward, the higher it will go before it comes back down.

Answer: Sound in air

Sound in air travels with a speed of about 330 m/s which is about 770 miles per hour. The fastest car can travel up to 300 miles per hour. Bullet trains can travel up to 400 miles per hour and cheetahs can run up to 70 miles per hour. So sound is fastest of them all.

Answer: Botanist

Botanists are the scientists who study plant. They study about their growth, reproduction, diseases and other things. Zoologists study animals. Astronomers study space and the stars. Archeologists study past human history by looking at artefacts.

Answer: Nitrogen

Our atmosphere consists of 78% nitrogen. Oxygen is 21% and carbon dioxide is 0.03%. The atmosphere also contains oxides of sulphur, nitrogen, as well as dust particles, among other things.

Answer: Earthworm

An earthworm doesn't have a backbone. These kinds of animals without a backbone are called invertebrates. Humans and other mammals have backbones, which protect their spinal cord and provide stability.

Answer: False

An animal that eat both plants and other animals is called an omnivore. Carnivores are those who eat meat only (such as lions). Those who only eat grass are called herbivores (like cows).

Answer: Sun

Iron melts at 1500 degrees Celsius. Paper burns at around 230 degrees Celsius. Petrol burns at around 300 degrees Celsius. The temperature of the Sun is much higher than these things. The surface temperature of the Sun is around 5000 degrees Celsius while the core of the Sun is very, very hot: around 15 million degrees Celsius.

Answer: Heart

The heart is the organ that continuously pumps blood in our body. It never gets tired (although sometimes it can get damaged and not work as well as it should) and works till you die. If you touch your chest, you can feel the beat of your heart pumping the blood.

Answer: Changing of solid to liquid

Melting is the process in which a solid substance changes into liquid. The temperature at which a solid melts is called its melting point. Ice melts into water at 32 degree Fahrenheit or 0 degree Celsius.