1. Which of the following statements is true regarding dwarf planets?
a) Dwarf planets are larger in size compared to regular planets.
b) Dwarf planets have significant gravitational influence, similar to regular planets.
c) Dwarf planets cannot clear their orbits of other objects like regular planets.
d) Dwarf planets have solid surfaces and are classified as terrestrial planets.
Answer: c) Unlike regular planets, dwarf planets have not cleared their orbits of other debris and objects. They share their orbital paths with other objects, such as asteroids or moons.
2. Ron visited a science museum and observed two planet models. One planet had a prominent red spot, while the other displayed stunning ring structures. Which of the following planets are most likely represented by these models?
a) Jupiter and Saturn
b) Mars and Saturn
c) Jupiter and Neptune
d) Venus and Mercury
Answer: a) The planet models with a prominent red spot and stunning ring structures most likely represent Jupiter and Saturn. Jupiter is known for its Great Red Spot, a massive storm, while Saturn is famous for its beautiful and intricate ring system.
3. Match the following planets with their corresponding characteristics.
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Column I
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Column II
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1. Neptune
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A) Smallest planet in our solar system
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2. Mars
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B) Ice giant with a unique sideways rotation
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3. Mercury
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C) Reddish colour due to iron minerals in the soil
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a) 1:A, 2:C, 3:B
b) 1:B, 2:C, 3:A
c) 1:C, 2:B, 3:A
d) 1:B, 2:A, 3:C
Answer: b) Neptune: Ice giant with a unique sideways rotation
Mars: Reddish colour due to iron minerals in the soil
Mercury: Smallest planet in our solar system
4. Identify the pair of Jovian planets from the following planets.
a) Mars and Venus
b) Pluto and Ceres
c) Jupiter and Mercury
d) Neptune and Uranus
Answer: d) The pair of Jovian planets from the given options is Neptune and Uranus.
5. Which of the following experiments is most suitable for demonstrating the concept of Earth's rotation?
a) Measuring the changing length of a shadow throughout the day.
b) Examining the effects of different lighting conditions on plant growth.
c) Analysing the change in seasons.
d) Investigating the relationship between weight and mass using falling objects.
Answer: a) Measuring the changing length of a shadow throughout the day is the most suitable experiment for demonstrating the concept of Earth's rotation. By observing how the length of a shadow changes, one can understand the movement of the Sun across the sky as a result of Earth's rotation.
