1.
The moon has no _____________ of its own.
Correct Answer
D. All of the above
Explanation
The moon has no light of its own because it does not produce its own light source like the sun. It only reflects the light from the sun. Additionally, the moon has no gases of its own as it lacks a substantial atmosphere. Lastly, the moon has no heat of its own as it does not generate its own heat source. Therefore, all of the above options are correct explanations for the moon having none of these characteristics.
2.
Which one of these is not an Ocean?
Correct Answer
C. Antarctica
Explanation
Antarctica is not an ocean, but rather a continent. It is the southernmost continent on Earth and is covered by ice. The Arctic, Antarctic, and Atlantic are all bodies of water, with the Arctic and Antarctic being polar regions and the Atlantic being an ocean.
3.
What happens to the air when it goes up?
Correct Answer
C. It gets thinner
Explanation
As air goes up, it experiences a decrease in pressure and density. This decrease in pressure causes the air molecules to spread out, resulting in a thinner atmosphere. As a result, the air becomes less dense and lighter. Therefore, the correct answer is "It gets thinner."
4.
It is difficult to climb on the mountains as they are very _________ and people need special __________ to go there.
Correct Answer
steep, training
Explanation
Mountains are known for their steep slopes, making it challenging to climb them. The word "steep" accurately describes the difficult terrain of mountains. Additionally, people require special training to navigate these treacherous conditions safely. This training helps them develop the necessary skills and knowledge to overcome the obstacles and dangers associated with mountain climbing.
5.
____________ is the world's largest mountain.
Correct Answer
A. Himalayas
Explanation
The Himalayas is the correct answer because it is widely recognized as the world's largest mountain range. Spanning across several countries, including India, Nepal, Bhutan, and China, the Himalayas are home to the highest peaks in the world, including Mount Everest. With its vast expanse and towering peaks, the Himalayas hold great significance in terms of geography, culture, and adventure tourism.
6.
Mountains are capped with ______________ from top.
Correct Answer
snow
Explanation
Mountains are capped with snow from top because as the altitude increases, the temperature decreases. This drop in temperature causes the moisture in the air to condense and freeze, resulting in the formation of snow. Since mountains are usually higher in elevation, they are more likely to experience colder temperatures, making them ideal for snow to accumulate and cap their peaks.
7.
The compass was invented by ____________.
Correct Answer
B. Arab Navigators
Explanation
Arab navigators invented the compass. The compass is a navigational instrument that uses the Earth's magnetic field to determine direction. It was first introduced by Arab navigators during the Middle Ages and later spread to other parts of the world. Arab navigators played a crucial role in developing and improving navigational tools and techniques, which greatly influenced maritime exploration and trade routes. Their contributions to navigation and the invention of the compass had a significant impact on the progress of seafaring and exploration throughout history.
8.
Earth's crust is the __________________ of the earth and it has been wrinkled like a skin of a dried apple.
Correct Answer
surroundings
9.
It is easy to grow crop on ____________ lands.
Correct Answer
A. Plain
Explanation
Plain lands are generally flat and have fertile soil, making it easier to grow crops. Infertile lands would not be suitable for crop growth, while rough and watery lands would pose challenges for cultivation. Therefore, the correct answer is plain.
10.
The _________ completes its orbit around the Earth.
Correct Answer
C. Moon
Explanation
The moon completes its orbit around the Earth.
11.
Sun takes a round of earth in whole 1 year. State true or false.
Correct Answer
B. False
Explanation
The statement is false. The sun does not take a round of the earth in one year. In fact, it is the earth that revolves around the sun in one year, causing the change in seasons and the length of days and nights. This phenomenon is known as the Earth's orbit around the sun.