Nature, earth, and environment trivia quiz questions.

Which Indian state is at the eastern end of the Himalayas?
A: Assam.

What is the name of the atmospheric gas which screens out the sun's harmful ultraviolet radiation?
A: Ozone.

What is the world's deepest ocean?
A: Pacific.

Which is the largest animal ever to have inhabited the Earth?
A: Blue Whale.

What once covered 14% of the Earth's land area, but by 1991 over half had been destroyed?
A: Rainforest.

Which inland sea between Kazakhstan and Uzbekistan is fast disappearing because the rivers that feed it have been diverted and dammed?
A: Aral Sea.

The damaged Chernobyl nuclear power station is situated in which country?
A: Ukraine.

What type of rock is granite?
A: Igneous.

What type of rock is basalt?
A: Igneous.

What is the main constituent of natural gas?
A: Methane.

What is the term for nutrient enrichment of lakes?
A: Eutrophication.

Which of the Earth's atmospheric layers reflects radio waves?
A: Ionosphere.

Which gas forms 80% of Earth's atmosphere?
A: Nitrogen.

In which mountain chain would you find Mount Everest?
A: Himalayas.

What is the collective term for substances such as coal, oil and natural gas, the burning of which produces carbon dioxide?
A: Fossil fuel.

What contributes to the greenhouse effect at lower atmospheric levels, but in the upper atmosphere protects life on Earth?
A: Ozone.

What is the name of the process by which substances are washed out of the soil?
A: Leaching.

Who was director of the environmental pressure group Friends of the Earth 1984 - 90?
A: Jonathon Porritt.

Which European country is committed to decommissioning all of its nuclear reactors?
A: Sweden.

Which Canadian city gave its name to the 1987world agreement on protection of the ozone layer?
A: Montreal.

Five-legged creatures have damaged which 1250 mile long wonder of the world?
A: Great Barrier Reef.

The dodo was a native bird of which island?
A: Mauritius.

What is the name given to the study of earthquakes?
A: Seismology.

How do igneous rocks form?
A: From cooling volcanic lava.

How many carats is pure gold?
A:24.

Marble is formed by the metamorphosis of which rock?
A: Limestone.

Which common water pollutant is believed to be harmful to newborn babies?
A: Nitrate.

Which radioactive substance sometimes occurs naturally in spring water?
A: Radon.

What natural feature covers approximately 6% of the Earth's land surface, and harbors 40% of the Earth's species?
A: Tropical rainforest.

What name is given to the huge growths of algae sometimes seen in polluted lakes and rivers?
A: A bloom.

What was the name of the dioxin-containing defoliant used during the
Vietnam war by the USA army?
A: Agent Orange.

In which area of the world do tropical rainforests occur?
A: On or near the equator.

CITES is an international agreement on which environmental problem?
A: The trade in endangered species.

What is the approximate circumference of the earth?
A: 24,900 miles.

What prevents the earth's atmosphere from floating out into space?
A: Gravity.

What element give amethyst its violet color?
A: Manganese.

Which of the emissions from cars are acidic?
A: Nitrogen oxides.

Which quarry in the Italian region of Tuscany is renowned for the quality of its marble?
A: Carrara.