Let's solve each question step by step:
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1. Is the sun also rotating?
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Answer: Yes, the Sun is rotating.
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Explanation: The Sun rotates on its axis, but unlike solid objects like Earth, it does not rotate uniformly. Different parts of the Sun rotate at different speeds due to its gaseous nature. The equatorial regions rotate faster than the polar regions. This phenomenon is known as
differential rotation.
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2. Name the drug known as "wonder drug"?
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Answer: Penicillin
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Explanation: Penicillin is often referred to as the "wonder drug" because it was one of the first effective antibiotics discovered. It revolutionized medicine by treating bacterial infections that were previously fatal. Its discovery in 1928 by Alexander Fleming marked a significant milestone in medical history.
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3. What is the age of Earth?
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Answer: Approximately 4.54 billion years.
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Explanation: The age of Earth is determined through radiometric dating of meteorites and rocks. Scientists have estimated that Earth formed about 4.54 billion years ago from the accretion of dust and gas surrounding the young Sun.
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4. What is the age of the universe?
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Answer: Approximately 13.8 billion years.
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Explanation: The age of the universe is estimated using various methods, including observations of the cosmic microwave background radiation and the expansion rate of the universe (Hubble's Law). Current estimates place the age of the universe at around 13.8 billion years.
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5. What is a light year?
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Answer: A light year is the distance that light travels in one year.
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Explanation: Light travels at a speed of approximately \( 299,792 \) kilometers per second. In one year, light covers a distance of about \( 9.461 \times 10^{12} \) kilometers or \( 5.879 \times 10^{12} \) miles. A light year is used as a unit of measurement for astronomical distances because the universe is vast, and using standard units like kilometers or miles would be impractical.
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6. What is the average heat of lightning?
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Answer: Lightning can reach temperatures of up to 30,000°C (54,000°F).
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Explanation: During a lightning strike, the air around the lightning bolt is heated to extremely high temperatures. This intense heat causes the air to expand rapidly, producing the sound we hear as thunder. The temperature of lightning is much hotter than the surface of the Sun, which has a temperature of about 5,500°C.
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7. What is the Pisa Tower known for?
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Answer: The Pisa Tower is known for its tilt.
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Explanation: The Leaning Tower of Pisa is famous for its unintended lean, which began shortly after its construction due to an uneven foundation. Despite its structural flaw, it has become an iconic symbol of Italy and a popular tourist attraction.
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Final Answers:
1.
Yes, the Sun is rotating.
2.
Penicillin
3.
Approximately 4.54 billion years
4.
Approximately 13.8 billion years
5.
The distance light travels in one year
6.
Up to 30,000°C (54,000°F)
7.
Its tilt
Boxed Final Answer:
\[
\boxed{
\begin{aligned}
1. & \text{ Yes, the Sun is rotating.} \\
2. & \text{ Penicillin} \\
3. & \text{ Approximately 4.54 billion years} \\
4. & \text{ Approximately 13.8 billion years} \\
5. & \text{ The distance light travels in one year} \\
6. & \text{ Up to 30,000°C (54,000°F)} \\
7. & \text{ Its tilt}
\end{aligned}
}
\]
Parent Tip: Review the logic above to help your child master the concept of quiz questions with answers on light.
