1.
What is the scientific term for northern light?
Correct Answer
C. Aurora
Explanation
The correct answer is Aurora. Aurora is the scientific term for the natural light display that occurs in the polar regions. It is caused by the interaction between the Earth's magnetic field and charged particles from the sun. The particles collide with atoms and molecules in the atmosphere, causing them to emit light. This phenomenon is commonly seen in the northern and southern latitudes and is known as the Northern Lights (Aurora Borealis) and Southern Lights (Aurora Australis) respectively.
2.
Where is the northern light seen most frequently?
Correct Answer
D. Antarctica
Explanation
The correct answer is Antarctica. The northern lights, also known as the aurora borealis, are actually seen most frequently in the polar regions, particularly in the Arctic and Antarctica. These natural light displays occur when charged particles from the sun collide with atoms in the Earth's atmosphere, causing them to emit light. While the Arctic region is also a common location to witness the northern lights, Antarctica is less populated and has less light pollution, making it an ideal place for observing this phenomenon.
3.
What part of the atmosphere is disturbed so the northern can be produced?
Correct Answer
D. MagnetosphereÂ
Explanation
The correct answer is Magnetosphere. The magnetosphere is a region of space surrounding the Earth, where the Earth's magnetic field interacts with charged particles from the Sun. Disturbances in the magnetosphere, such as solar flares or coronal mass ejections, can cause disturbances in the Earth's atmosphere. These disturbances can lead to the production of the northern lights, also known as the aurora borealis, in the northern hemisphere.
4.
What is the origin of the term "aurora"?
Correct Answer
B. Latin
Explanation
The term "aurora" originates from Latin. The Latin word "aurora" means "dawn" or "sunrise". This term is used to describe the natural phenomenon of lights in the sky, also known as the Northern or Southern Lights, which occur near the Earth's polar regions. Latin is a classical language that has influenced many other languages, and it is commonly used in scientific and academic contexts.
5.
Which of these scientists did not work on the physics of northern light?
Correct Answer
B. Micheal Faraday
Explanation
Michael Faraday did not work on the physics of northern lights. He was a renowned English scientist who made significant contributions to the fields of electromagnetism and electrochemistry. However, his work did not specifically involve studying or researching the physics of northern lights.
6.
When was it described by Galileo Galili?
Correct Answer
B. 1619
7.
Which of these places does not receive the ray of Aurora Australis
Correct Answer
C. Poland
Explanation
Poland does not receive the ray of Aurora Australis because it is located too far north. The Aurora Australis, also known as the Southern Lights, is a natural light display that occurs in the southern hemisphere. It is caused by the interaction between charged particles from the sun and the Earth's magnetic field. Poland is located in the northern hemisphere, so it is too far away from the southern polar regions where the Aurora Australis is visible.
8.
What is the time during which aurora is best seen called?
Correct Answer
D. Magnetic midnight
Explanation
The time during which aurora is best seen is called "Magnetic midnight." This is because during this time, the Earth's magnetic field is most aligned with the incoming solar wind, which enhances the chances of seeing the aurora. The term "Magnetic midnight" refers to the local time when the magnetic field is at its peak alignment, typically occurring around midnight.
9.
Which of these colours is not displayed by the northern light?
Correct Answer
D. White
Explanation
The northern lights, also known as the aurora borealis, are a natural phenomenon that occurs when charged particles from the sun collide with atoms in the Earth's atmosphere. These collisions produce different colors of light, including green, blue, and red. However, white is not a color that is typically displayed by the northern lights. Instead, it is a combination of all colors, so it is not considered a distinct color of the aurora borealis.
10.
When was the cause of aurora emissions discovered?
Correct Answer
B. 1960
Explanation
The cause of aurora emissions was discovered in 1960.