1.
Which planet is the biggest?
Correct Answer
C. Jupiter
Explanation
Jupiter is the correct answer because it is the largest planet in our solar system. It has a diameter of about 143,000 kilometers, which is more than 11 times the diameter of Earth. Jupiter's massive size is due to its composition primarily of gas, mainly hydrogen and helium. Its immense gravitational pull also contributes to its size.
2.
Which planet is the smallest?
Correct Answer
D. Mercury
Explanation
Mercury, the closest planet to the Sun and the smallest in our solar system, is just a bit larger than Earth's Moon. It boasts a surface adorned with tens of thousands of impact craters.
3.
How long does it take for Jupiter to move around the sun?
Correct Answer
B. About 12 Earth years
Explanation
Jupiter takes about 12 Earth years to complete one orbit around the sun. This is because Jupiter is much farther away from the sun compared to Earth, and its larger orbit results in a longer orbital period.
4.
If it is 12 noon at Greenwich, what will be the time in New York?
Correct Answer
C. 7: 00 am
Explanation
Considering that Greenwich Mean Time (GMT) is 12 noon, every 1° of longitude corresponds to 4 minutes. So, at a longitude of 74°W (74 × 4 = 296 minutes), when it's 12 noon in Greenwich, the time in New York is 7:04 a.m.
5.
From these, which is a sphere of the land on Earth?
Correct Answer
B. Lithosphere
Explanation
The lithosphere is the correct answer because it refers to the rigid outer layer of the Earth, which includes the crust and the uppermost part of the mantle. It is composed of solid rock and is divided into tectonic plates. The other options - stratosphere and mesosphere - refer to different layers of the Earth's atmosphere, while "none of the above" is incorrect as the lithosphere is indeed a sphere of the Earth.
6.
Who are meteorologists?
Correct Answer
B. The people who study about weather
Explanation
Meteorologists are scientists who specialize in studying and predicting the weather. They analyze atmospheric conditions, such as temperature, humidity, and air pressure, to understand and forecast weather patterns. They use various tools and technologies, such as weather satellites and radar systems, to collect data and make accurate predictions. Meteorologists play a crucial role in providing weather forecasts for various purposes, including agriculture, aviation, and disaster preparedness. Therefore, the correct answer is "the people who study about weather."
7.
Archaeologists
Correct Answer
A. Study about human pasts through investigating historic and prehistoric sites.
Explanation
The correct answer is "Study about human pasts through investigating historic and prehistoric sites." This answer is supported by the statement in the given information that archaeologists "study about human pasts through investigating historic and prehistoric sites." The other options mentioned, such as building heavy roads and buildings or preserving forests, are not mentioned as activities of archaeologists in the given information.
8.
Mariana Trench (deepest location on Earth) is in which ocean?
Correct Answer
C. Pacific ocean
Explanation
The Mariana Trench, the deepest location on Earth, is located in the Pacific Ocean. This trench is located in the western Pacific Ocean, east of the Mariana Islands. It reaches a depth of approximately 36,070 feet (10,994 meters) at its lowest point, known as the Challenger Deep. The Atlantic Ocean and Indian Ocean do not contain the Mariana Trench, making the correct answer the Pacific Ocean.
9.
Which of these animals has teeth outside its mouth too?
Correct Answer
D. Elephant
Explanation
Elephants have teeth outside their mouths too, which are known as tusks. These elongated incisor teeth grow continuously throughout an elephant's life and can protrude several feet from their mouths. Tusks serve various purposes, including digging, lifting objects, and defense. They are made of ivory, a valuable material that unfortunately leads to illegal poaching and endangerment of elephants.
10.
Which of these is an amphibian?
Correct Answer
A. Frog
Explanation
The correct answer is Frog because frogs are amphibians. Amphibians are cold-blooded vertebrates that typically have a moist, glandular skin, lay eggs in water, and undergo a metamorphosis from a juvenile aquatic stage to an adult terrestrial stage. Frogs have adaptations that allow them to live both in water and on land, such as their ability to breathe through their skin and their unique life cycle that involves a tadpole stage in water and an adult stage on land.
11.
Which planet is also morning and evening star?
Correct Answer
A. Venus
Explanation
Venus is known as the morning and evening star because it is the brightest object in the sky after the Sun and the Moon. Due to its close proximity to the Sun, Venus can be seen in the early morning just before sunrise or in the evening just after sunset. Its brightness and visibility make it easily distinguishable and earned it the title of the morning and evening star.
12.
Largest ocean in world
Correct Answer
C. Pacific Ocean
Explanation
The Pacific Ocean is the largest ocean in the world. It covers an area of about 63 million square miles, which is larger than the total land area of all the continents combined. It is also the deepest ocean, with an average depth of about 12,080 feet. The Pacific Ocean is bordered by the continents of Asia and Australia to the west, and the Americas to the east. It is known for its vastness and its diverse marine life, including numerous species of fish, mammals, and coral reefs.