Questions

The chemical element with the atomic number 35, Bromine is a non metal that remains liquid at room temperature. Mercury also remains liquid at room temperature but it is a metal. Bromine is the third lightest halogen.

The transformation of Hydrogen atoms into Helium atoms with an emission of vast amount of energy is called nuclear fusion which is the source of energy for the Sun.

Epicentre of Earthquakes can be over both oceanic and continental surface. Epicentres above oceanic surface are cause of tsunamisof large intensity. Anearthquake's hypocentreis the position where the strain energy stored in the rockis first released, marking thepointwhere the fault begins to rupture.

Glaciers cut distinctive U-shaped valleys with a flat floor and steep sides. These are an example of a glacial erosion landform.

Example: As the main glacier erodes deeper into the valley, the tributary is left higher up the steep sides of the glacier.

Bula Chaudhury, Indian swimmer best known for her long-distance swimming feats.

In 2005 she became the first woman to have swum across sea channels of five continents including the Strait of Gibraltar, the Tyrrhenian Sea, Cook Strait, Toroneos Gulf (Gulf of Kassandra) in Greece, the Catalina Channel off the California coast, and from Three Anchor Bay to Robben Island near Cape Town, South Africa.