6th Class Geography MCQs | All Units & Do You Know Facts | PAKMCQs

According to the Big Bang theory, the universe started approximately 13.8 billion years ago as a result of a gigantic explosion from a single point.

The Earth's crust has an average thickness ranging between 8 and 40 kilometers.

Continental crust is thicker than oceanic crust, measuring about 30 to 50 km in thickness.

Oceanic crust is relatively thin, having an average thickness of about 5 to 7 km.

The age of oceanic crust is estimated to be approximately 200 million years.

The transition zone between the hydrosphere and the Earth's crust is termed the Conrad discontinuity.

The boundary separating the crust from the underlying mantle is called the Mohorovicic discontinuity.

The transition zone between the upper mantle and the lower mantle is called the Repetti Discontinuity.

Guttenberg's discontinuity at 2900 km depth was identified by Weichert Guttenberg in 1912.

The tectonic plates of Earth's crust move very slowly, roughly at the same rate that human fingernails grow.

The Arabian plate (along with Caribbean, Cocos, Nazca, Philippine, and Scotia plates) is classified as a minor plate.

There are 117 known elements mentioned in the textbook.

Eight common elements (Oxygen, Silicon, Aluminium, Iron, Calcium, Potassium, Magnesium, and Sodium) form most minerals.

Minerals are composed of elements, and rocks are solid aggregates of minerals.

Magma is high-temperature molten silicate matter with dissolved gases located beneath the Earth's surface.

When molten magma erupts onto the Earth's solid surface, it is termed lava.

80% of the Earth's crust is made of igneous rocks.

While sedimentary rocks are only 5% of the total crust volume, they cover 75% of the exposed land surface.

Balochistan leads national coal production, contributing 58% of the country's total coal.

The massive copper and gold deposits of Reko Diq are located in the Chagai district of Balochistan.

Chromite (along with iron, copper, gold, zinc, lead, and manganese) is a metallic mineral.

Soapstone, marble, granite, dolomite, and gypsum are listed as non-metallic minerals.

The Main Boundary Thrust (MBT) forms the tectonic boundary between the Greater and Lesser Himalayas.

The Chaman Fault traverses Khuzdar, Kalat, and Quetta before crossing into Afghanistan.

The Main Karakoram Fault (MKF) lies between the Kohistan Ladakh arch and the Karakoram arch.

The Main Boundary Fault (MBF) is situated in the southern Himalayan region.

Airborne fragments of magma or lava ranging from fine dust to boulders are collectively called Tephra.

Dust, ash, cinder, lapilli, and volcanic bombs are all specific forms of pyroclastic tephra.

Unlike boundary volcanoes, most hot spot volcanoes occur within the interiors of tectonic plates over thermal plumes.

Compression from continental collision created numerous active faults, making these regions major earthquake zones.

The Balochistan Plateau represents the easternmost extension of the Iranian plateau.

When a block of crust drops downward between two parallel normal faults, a Rift Valley or Graben is formed.

The most celebrated example of a rift valley is the Great Rift Valley located in East Africa.

Map conventions are standard rules and elements (title, scale, legend, north arrow) that allow readers to decode maps.

According to standard map cartography, water bodies are conventionally shaded in blue.

Monsoons are seasonal wind systems that undergo a complete reversal of direction between summer and winter.

The Polar Ice Cap is Earth's coldest zone, where temperatures can plummet to as low as -78°C.

In the Polar Tundra, the ground thaws briefly for only 4 to 5 months, permitting mosses and lichens to grow.

The term "Mild" corresponds to temperatures within the range of 10°C to 20°C.

Temperatures between 0°C and 10°C are categorized as "Cool".

Rainforests filter carbon dioxide and atmospheric pollutants while generating oxygen via photosynthesis.

Indonesia is recognized as the world's largest producer of rubber latex.

Tapping a rubber tree yields a cup of latex containing about 50 grams of solid rubber.

Because they grow in coastal tidal marshes, mangroves are often called floating forests.

The Pakistan Navy has planted over 7.5 million mangroves along the coastal belt since 2016.

Changa Manga was established by British authorities to supply fuel wood and sleepers for railway steam engines.

The Miyawaki method enables native trees to grow 10 times faster and 30 times denser than standard plantations.

Tertiary effects are enduring consequences over time, including permanently altered topography and degraded agricultural productivity.

Hurricane Katrina caused over 1,800 deaths and an estimated 125 billion dollars in property damage.

Loss of habitat refers to wildlife being displaced from their natural ecosystems due to disasters like forest fires.

Global citizenship educates youth worldwide to act as stewards who minimize environmental harm to Earth.

Oceanic warming accelerates the melting of massive glaciers and ice sheets, driving global sea level rise.

Stream gauges are installed in rivers and channels to measure flood water height and flow volume.

Coastal tide gauges track anomalous rises in sea surface levels to detect approaching tsunami waves.

Satellites deliver timely and accurate imagery of damaged zones, allowing authorities to dispatch relief efficiently.

Recycling one ton of paper spares roughly 17 mature trees from being felled.

Mass wasting is the gravity-driven movement of loose rock, debris, and soil down sloping hillsides.

The Blue Economy emphasizes sustainable utilization of marine assets for development while preserving oceanic health.

Through deforestation, plowing, and construction, human actions accelerate soil erosion rates by 10 times over nature.

Afforestation binds topsoil with root systems and breaks the impact of rainfall, making it the premier defense against erosion.

According to UN demographic data, over 50% (more than half) of the human population now lives in urban cities.