Knowledge Test For High School Students

Explanation
When the diameter of a sphere is doubled, the radius of the sphere also doubles. The volume of a sphere is calculated using the formula V = (4/3)πr³, where r is the radius. When the radius is doubled, it is raised to the power of 3, resulting in a volume that is 8 times the original volume. 

Explanation
In 1492, Columbus discovered the American continents. This is a well-known historical fact. Columbus's expedition was sponsored by the Catholic Monarchs of Spain, and he set sail with three ships - the Santa Maria, the Pinta, and the Niña. His discovery of the Americas marked the beginning of European colonization and exploration of the New World.

Explanation
The speed of sound is the distance that sound waves travel in a certain amount of time. In dry air at 20 degrees Celsius, the speed of sound is approximately 768 mph. This means that sound waves can travel approximately 768 miles in one hour.

Explanation
Alexander Graham Bell is credited with inventing the telephone. He was a Scottish-born scientist, inventor, and teacher of the deaf. Bell's invention of the telephone revolutionized communication, allowing people to speak to each other over long distances. He was awarded the first US patent for the telephone in 1876. Bell's work on the telephone laid the foundation for the development of modern telecommunications technology.

Explanation
Pangea is the correct answer because it refers to the supercontinent that existed millions of years ago when all the continents were joined together as one landmass. The term "Pangea" comes from the Greek words "pan" meaning "all" and "gea" meaning "earth".

Explanation
Crocodile is not a mammal because it belongs to the reptile family. Mammals are characterized by having mammary glands that produce milk for their young, while reptiles do not possess this feature. Dogs, elephants, and humans are all mammals as they give birth to live young and nurse them with milk.

Explanation
Shakespeare is known as a famous writer because he is widely recognized for his contributions to literature. He is considered one of the greatest playwrights in history, known for his plays such as Romeo and Juliet, Hamlet, and Macbeth. His works have had a significant impact on the English language and have been studied and performed for centuries. Shakespeare's writing style, use of language, and exploration of universal themes have made him a renowned figure in the world of literature.

Explanation
The blue whale is not a fish. It is a mammal. Although it lives in the water, it breathes air and nurses its young with milk, which are characteristics of mammals. The other options, such as goldfish, tiger shark, and silver carp, are all types of fish.

Explanation
The Nile is the longest river in the world, stretching over 6,650 kilometers. It flows through eleven countries in northeastern Africa, including Egypt, Sudan, and Ethiopia. The river has played a significant role in the development of ancient civilizations, providing water for agriculture, transportation, and trade. The Nile is known for its historical and cultural importance, as well as its diverse ecosystem that supports a wide range of plant and animal species.

Explanation
World War 2 lasted for 6 years because it began in 1939 and ended in 1945. The war started with Germany's invasion of Poland in 1939 and escalated as more countries became involved. It finally came to an end in 1945 with the surrender of Germany and Japan. This period of 6 years was marked by significant global conflict and major events such as the Battle of Stalingrad, D-Day, and the dropping of atomic bombs on Hiroshima and Nagasaki.