EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these is a constructive change?
A
Volcano erupting forming new land.
B
A river cutting out a canyon.
C
A glacier scraping down the side of a mountain
D
Ice forming causing a rock to cut in half.
Explanation: 

Detailed explanation-1: -Volcanoes are one of the most prominent examples of constructive forces. During a volcanic eruption, the molten lava spills out. The hot molten lava gets solidified upon cooling and becomes hard with time. This leads to the formation of a rock-like structure on the ground.

Detailed explanation-2: -Volcanic materials ultimately break down and weather to form some of the most fertile soils on Earth, cultivation of which has produced abundant food and fostered civilizations. The internal heat associated with young volcanic systems has been harnessed to produce geothermal energy.

Detailed explanation-3: -Answer and Explanation: Geologists and volcanologists, a type of geologist specializing in volcanoes, conclude that volcanoes are constructive forces because they often create new landforms and build on existing ones.

Detailed explanation-4: -Constructive plate boundary volcanoes At constructive plate boundaries, the tectonic plates are moving away from one another. The Earth’s crust is pulled apart to create a new pathway for rising hot magma to flow on to the surface. Volcanoes can sometimes form in these setting; one example is Iceland.

Detailed explanation-5: -Volcanic processes are constantly changing the Earth. Eruptions can create new islands, build and destroy mountains, and alter landscapes.

There is 1 question to complete.