How does the new seafloor form at the Mid-Ocean Ridge? Mid-ocean ridges occur along divergent plate boundaries, where new ocean floor is created as the Earth’s tectonic plates spread apart. As the plates separate, molten rock rises to the seafloor, producing enormous volcanic eruptions of basalt. Why does new oceanic crust form at mid-ocean ridges? […]

What lines of evidence support the continental drift hypothesis? Alfred Wegener, in the first three decades of this century, and DuToit in the 1920s and 1930s gathered evidence that the continents had moved. They based their idea of continental drift on several lines of evidence: fit of the continents, paleoclimate indicators, truncated geologic features, and […]

Which wave has the most energy and can be the most harmful? gamma rays Which type of radiation has the highest energy and is the most damaging to human tissue? Why are gamma rays the most dangerous? The extremely high energy of gamma rays allows them to penetrate just about anything. They can even pass […]

What kind of a layer is mesosphere? The mesosphere (/ˈmɛsoʊsfɪər/; from Greek mesos, “middle”) is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere. In the mesosphere, temperature decreases as altitude increases. What is the mesosphere made of? The mesosphere’s atmosphere is low density and made up of oxygen, […]

What is an application of the Doppler effect used by submarines? The Doppler effect The amount of the frequency shift can be used to determine the velocity of the moving obstacle. Just as the Doppler shift for radar, an electromagnetic wave, can be used to determine the speed of a moving car, so can the […]

How many elephants are there in 2020? With only 000 left in the wild, the species is classified as endangered. And it is critical to conserve both African and Asian elephants since they play such a vital role in their ecosystems as well as contributing towards tourism and community incomes in many areas. How many […]

What formal region means? Formal regions are uniform or homogeneous areas where everyone in that region shares common attributes or traits like language, climate or political system. Formal regions are primarily used to determine and outline political, cultural and economic regions. What are 3 formal regions? Three common types of regions are formal regions, which […]

Why does Earth rotate on its axis? Earth spins because of the way it was formed. Our Solar System formed about 4.6 billion years ago when a huge cloud of gas and dust started to collapse under its own gravity. As the cloud collapsed, it started to spin. The Earth keeps on spinning because there […]

What are some examples of cultural diffusion? The definition of cultural diffusion is the spread of the beliefs and social activities of one culture to different ethnicities, religions, nationalities, etc. An example of cultural diffusion is the tradition of the German Christmas pickle becoming popular in the United States. What are two examples of cultural […]

How can we reduce population growth? Reducing population growth Contraception. Abstinence. Reducing infant mortality so that parents do not need to have many children to ensure at least some survive to adulthood. Abortion. Adoption. Changing status of women causing departure from traditional sexual division of labour. Sterilization. In what way does the environment control human […]