10 most difficult Earth riddlesEarth quiz
Petrology is a branch of science concerned with...
finding an oil deposites
studying characteristics of petroleum only
studying various types of sediment
Petrology is the branch of geology that studies rocks and the conditions under which they form.
If Earth's radius was larger by 1 meter, how much longer would its equator be?
by approx 6 meters
by approx 6 kilometers
by approx 60 kilometers
by approx 6000 kilometers
For each circle, the length of the circumference is c=2πr. Hence, if a radius grows by 1 meter, the circumference grows by 2 π meters - no matter what the initial value of radius was.
Where is the saltiest lake in the world?
With a salinity level of over 40%, Don Juan Pond is the saltiest of the Antarctic lakes. This salinity allows the pond to remain liquid even at temperatures as low as −50 °C (−58 °F) due to the interference of salts with the bonding of water molecules. Don Juan Pond was discovered in 1961 by George H. Meyer.
What is the tallest mountain in the world, when measured from its base?
Mauna Kea is a dormant volcano on the island of Hawaii. Standing 4,207 m above sea level, its peak is the highest point in the state of Hawaii. Most of the mountain is underwater; when measured from its oceanic base, Mauna Kea is over 10,000 m tall and is the tallest mountain on Earth.
What is the oldest dated mineral on Earth?
Zircons from the Western Australian Jack Hills returned an age of 4.404 billion years, interpreted to be the age of crystallization, making them the oldest minerals so far dated on Earth.
Who first proposed the need to use summer time?
Georg Vernon Hudson
The idea of daylight saving was first conceived by Benjamin Franklin during his sojourn as an American delegate in Paris in 1784. Sometimes, the creator of this solution is George Vernon Hudson, who wanted to "make better use of the long days of summer. The pioneers in the introduction of summer time were Germans during the First World War.
What is the Diameter of Earth?
ca 48 700 km
ca 24 700 km
ca 12 700 km
ca 6 700 km
The latest measurements indicate that the Earth has an equatorial diameter of 12,756 km (7926 mi), and a polar diameter of 12713.6 km (7899.86 mi). In short, objects located along the equator are about 21 km further away from the center of the Earth (geocenter) than objects located at the poles.
In which month is the Earth closest to the Sun?
there is no difference
Earth's perihelion occurs around January 3, and the aphelion around July 4. The distance change is about 3.5%, which gives 6.9% increase in solar energy reaching the Earth at perihelion relative to aphelion. Since the southern hemisphere is tilted toward the perihelion, the southern hemisphere receives more energy from the Sun than does the northern over the course of a year.
What is the only country to be in all 4 hemispheres?
Fed. States of Micronesia
Kiribati, is an island republic in the Central Pacific. It comprises 33 coral atolls and isles stretching along the equator. It is the only country in all four hemispheres. The country's capital is South Tarawa. It is pronounced "Kiri-bahs"