What is the orbital event called when Earth achieves its closest proximity to the sun _____________?
Show answer Hide answer
Answer: B. Perihelion
Explanation
Perihelion is the orbital event when Earth achieves its closest proximity to the Sun. Earth travels in an elliptical orbit, making its distance from the Sun vary annually. Gravitational pull is strongest during perihelion due to the minimal distance separation. Earth reaches perihelion early every January, coming within about 147 million kilometers. Johannes Kepler calculated planetary orbits mathematically using laws of elliptical motion. Seasons are driven by axial tilt rather than variations in Earth-Sun orbital distance.
Astronomers calculate orbital mechanics precisely to predict planetary positions and space missions. Comets also experience dramatic perihelion events when passing close to the burning Sun. Understanding orbital eccentricity helps scientists study climate fluctuations over long geological eras. Aphelion is the orbital point where Earth reaches its maximum distance from the Sun. Apoapsis is the general term for the highest orbital point around any celestial body. Periapsis is the general term for the closest orbital point around any celestial body.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
Related questions
Q1. How would you define the medical sleep disorder known as Insomnia?
Show answer Hide answer
Answer: D. Inability to sleep
Insomnia is a common sleep disorder characterized by difficulty sleeping. Affected individuals struggle to fall asleep stay asleep or get rest. Chronic insomnia can negatively impact daytime functioning and overall healt...
Q2. What is the prevailing rate of clinical depression in Pakistan?
Show answer Hide answer
Answer: D. 34
Statistical figures and estimates regarding medical conditions vary by specific survey and epidemiological research study. Option D is marked as the correct categorical index corresponding to this specific dataset questi...
Q3. Name the specific bacterium utilized in yogurt production.
Show answer Hide answer
Answer: C. Lactobacillus
Lactobacillus bacteria ferment milk sugars into lactic acid during production. This acid curdles milk proteins to create the characteristic texture of yogurt. Selecting this bacterium correctly identifies the microorgani...
Q4. What is the chemical nature of Dry Ice?
Show answer Hide answer
Answer: B. Solid Carbon Dioxide
Dry ice is the solid form of carbon dioxide maintained at low temperatures. It sublimates directly from a solid into a gas without melting into liquid. This extreme cold makes it useful for specialized cooling and storag...
Q5. Atmospheric weather characterizes the state of ______ at any given moment.
Show answer Hide answer
Answer: C. The atmosphere
Weather describes the short-term conditions of the atmosphere at a given time and specific geographic location. Variables such as temperature, precipitation, humidity, and wind velocity define this dynamic state of the a...
Q6. What is the astronomical definition of an Equinox?
Show answer Hide answer
Answer: D. Equal duration of day and night
An equinox is an astronomical event where Earth's equator aligns with the sun. This celestial geometry causes day and night to have approximately equal duration. Choosing this definition correctly explains the astronomic...