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Some Natural Phenomena Class 8 Worksheet Science Chapter 12

Q1: What type of electric charge is acquired by a rubber balloon when rubbed with a woolen cloth?

Q2: Sometime, a crackling sound is heard while taking off sweater during winters. Explain.

Q3: Explain why a charged balloon is repelled by another charged balloon whereas an uncharged balloon is attracted by another charged balloon?

Q4: What causes lightning in the sky?

Q5: List three states in India where earthquakes are more likely to strike.

Q6: The weather department has predicted that a thunderstorm is likely to occur on a certain day. Suppose you have to go out on that day. Would you carry an umbrella? Explain.

Q7: What will you do to protect yourself from lightning if you are in an open field?

Q8: What precautions would you take to protect yourself during an earthquake if you are at home?

Q9: What are the two kinds of electric charges?

Q10: What happens when plates brush past one another, or a plate goes under another due to collision?

Q11: When a charged refill is touched with the metal top of an electroscope, its aluminium leaves diverge. Give reason.

Q12: What is lightning conductor? How does it work?

Q13: Name the scale on which the destructive energy of an earthquake is measured. An earthquake measures 3 on this scale. Would it be recorded by a seismograph? Is it likely to cause much damage?

Q14: How will you charge a glass rod by the method of friction?

Q15: Why is it not safe to stay under a tree during a thunderstorm?

You can access the solutions to this worksheet here.

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FAQs on Some Natural Phenomena Class 8 Worksheet Science Chapter 12

1. What are some examples of natural phenomena?
Ans. Natural phenomena are events that occur in nature and are often studied in science. Some examples include earthquakes, tornadoes, hurricanes, volcanic eruptions, tsunamis, and seasonal changes like monsoons and droughts. Each of these events has unique characteristics and causes, making them fascinating subjects for study.
2. How do natural phenomena affect our daily lives?
Ans. Natural phenomena can have significant impacts on our daily lives. For example, severe weather events like hurricanes can lead to evacuation, property damage, and loss of life. Earthquakes can cause structural damage and disrupt services. Additionally, phenomena like seasonal changes affect agriculture, influencing food production and availability.
3. What causes natural phenomena like earthquakes and volcanoes?
Ans. Earthquakes are primarily caused by the movement of tectonic plates along faults in the Earth's crust. When stress builds up along these faults, it can be released suddenly, resulting in an earthquake. Volcanoes, on the other hand, are formed when magma from beneath the Earth's crust rises to the surface, often due to tectonic plate movements. This can lead to eruptions that release lava, ash, and gases.
4. Can natural phenomena be predicted?
Ans. While some natural phenomena can be predicted to a certain extent, others are more challenging. Meteorologists can forecast weather-related events like storms and hurricanes using technology and models. However, predicting earthquakes is much more difficult due to the complexity of tectonic processes. Scientists are continuously researching ways to improve prediction methods for various natural events.
5. What role do natural phenomena play in Earth's ecology?
Ans. Natural phenomena play a crucial role in shaping Earth's ecosystems. For instance, wildfires can help some plant species to regenerate, while floods can replenish soil nutrients. Additionally, seasonal changes influence animal behavior and migration patterns. These events contribute to the balance of ecosystems and the survival of various species, highlighting the interconnectedness of natural processes.
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