Explanation

RF (Representative Fraction) 1:50,000 means:

1 unit on map = 50,000 units on ground

So, 1 cm on map = 50,000 cm on ground

Convert cm to meters:

100 cm = 1 meter

50,000 cm = 500 meters

Last verified on 02-05-2026

Explanation

• Pacific Ring of Fire is a major zone of volcanoes and earthquakes around the Pacific Ocean.
• It is mainly formed due to subduction zones, where one tectonic plate slides under another.
• This process creates volcanic activity and seismic earthquakes.
• It contains about 75% of the world’s active volcanoes.
• It is the most geologically active region on Earth.

Last verified on 02-05-2026

Explanation

• Shifting cultivation is also known as Milpa system in America.
• It is a farming method where land is cleared.
• It is used for a few years, then left fallow.
• Farmers grow crops like maize, beans, and squash.
• It is common in Central and South America (Mesoamerican regions).
• Soil fertility is restored naturally after shifting.

Last verified on 02-05-2026

Explanation

• Pakistan generates electricity from thermal, hydro, and other sources.
• In 2002–03, thermal power was the dominant source of electricity.
• It contributed about 68% of total electricity generation.
• Thermal power mainly comes from oil, gas, and coal plants.
• Hydropower was the second major source at that time with 30%.

Last verified on 02-05-2026

Explanation

• Western extent: 60°50′ E
• Eastern extent: 77°50′ E
• Latitude range: ~24°N to 37°N
• Time zone: PST (UTC +5)
• Hemisphere: Northern & Eastern

Last verified on 02-05-2026

Explanation

• The Sun is a star at the center of our solar system with a surface temperature of about 6000 °C (Sun’s core is even hotter, ~15 million °C).
• It provides light and heat, essential for life on Earth.
• The Sun’s energy drives weather, photosynthesis, and climate.

Last verified on 18-03-2026

Explanation

• Sun mass → 1.989 × 10³⁰ kg
• Earth mass → 5.972 × 10²⁴ kg
• Sun ≈ 330,000 Earths
• Sun contains 99.8% of solar system mass
• Earth is only 0.2% of total system mass (approx.)

Last verified on 02-05-2026

Explanation

• Dead Sea is the lowest point on Earth’s land surface.
• It lies in the Jordan Rift Valley between Jordan and Israel.
• Its surface is about 430 meters below sea level.
• It is a very salty lake, not a sea.
• The main inflow river is the Jordan River.

Last verified on 02-05-2026

Explanation

• Cumulonimbus cloud are tall, dense, vertical clouds.
• They are mainly responsible for heavy rain, thunderstorms, and lightning.
• These clouds form in unstable and humid atmospheric conditions.
• They can extend from low levels to very high altitudes.
• Strong updrafts inside them produce intense rainfall.

Last verified on 02-05-2026

Explanation

• Katabatic wind is a cold, dense wind that flows downhill due to gravity.
• It forms when air over highlands becomes very cold and heavy.
• This air moves down slopes into valleys or plains.
• It is common in polar regions and high mountains.
• These winds can be very strong and cold.

Last verified on 02-05-2026