The solar system is bounded together by gravity, and is made up of the Sun eight planets and dwarf planets
The correct options are;
- The Sun ⇒ generates energy deep in its core through the fusion of hydrogen and into helium
- Earth ⇒ has a single moon that is surprisingly large compared to its planet
- Saturn ⇒ is orbited by at least two geologically active moons: Titan and Enceladus
- Neptune ⇒ has a large moon, Triton, that almost certainly once orbited the Sun independently
- Venus ⇒ has a surface hot enough to melt led as a result of extremely strong greenhouse effect
- Uranus ⇒ has an axis tilt that gives it very extreme seasons
- Pluto ⇒ was studied up close in 2015 by the New Horizons spacecraft.
- Mars ⇒has no surface liquid water today, but shows clear evidence of such water in the distant past
- Jupiter ⇒ has a famous storm known as the Great Red Spot
- Eris ⇒ is similar in size to Pluto and also considered a dwarf planet
- Mercury ⇒ has a greater difference in temperature between its day and night sides than any other world
Reasons:
The Sun generates energy by nuclear fusion in its cores
The size of the Moon more than a quarter of the Earth's size
Saturn moon Titan shows signs of volcanic activity
The moon Triton rotates in the opposite direction to the rotation of Neptune
Venus is the second closest planet to the Sun with a thick CO₂ atmosphere, resulting in a greenhouse effect that makes the planet 510°C hotter
Uranus has seasons that last for approximately 20 years
The New Horizons spacecraft took 9.5 years to reach Pluto after the mission was launched in 2006
Mars liquid water disappeared billions of years ago
The Great Red Spot storm has lasted for over 300 year
Eris, one of the largest dwarf planets and is further from the Sun than Pluto
The difference in temperature between the day and night sides of Mercury is 427°C - (-180°C) ≈ 607°C
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A dull knife is actually more dangerous than a sharp one because it forces you, as the chef, to add more pressure while cutting.
<h3>Why a dull knife is more dangerous than sharpen knife?</h3>
As the chef we have cut many things. Chef have to look over all the knifes whether it is sharp or dull and whether it is long or short, et.,. They have various knifes that can be used at various places by giving force and that force can be known to be pressure.
Pressure (symbol: p or P) can be defined as the force that can be applied perpendicular for the straight to the surface of an object which will be per unit area over and there the force is gets distributed.
Pressure formula can be, P = F/A N/m².
Thus, dull knife is more dangerous than the sharp, because of the pressure.
Hence, Option D is the correct answer.
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Answer:
Beats is a phenomenon which occurs when two sound waves with different frequencies overlap each other.
Explanation:
When these two sound waves overlap, a third frequency is formed. The places where the two waves reinforces each other, constructive interference takes place and a louder sound is produced whereas, at points where destructive interference takes place a softer sound is produced.
These alternative loud and soft sounds are called beats.
Answer:
Lightning is seen earlier than the thunder because speed of light is more than the speed of sound. Therefore, even though both occurs as same time and place in the sky, lightning is seen earlier.
