Explanation

Hypocenter is the point beneath the Earth’s surface where the vibrations of an earthquake originates and which corresponds to the location where the motion on a fault surface starts.

Explanation

 Asteroids are rocky worlds revolving around the sun that are too small to be called planets.

They are also known as planetoids or minor planets.

Explanation

C

A total solar eclipse occurs when the Moon is exactly positioned between the Sun and the Earth and the Earth passes through the Moon's shadow. Solar eclipses can only happen during the day and at the time of a new Moon. Total solar eclipses last for only a few minutes.

while on the other hand 

During a lunar eclipse, Earth comes between the Sun and the Moon, blocking the sunlight falling on the Moon. There are two kinds of lunar eclipses: A total lunar eclipse occurs when the Moon and Sun are on opposite sides of Earth.

Explanation

Green leafy vegetables and intestinal bacteria are good source of vitamin K

Explanation

A low pressure system has lower pressure at its center than the areas around it.

Explanation

The seismic velocity increases gradually with the depth of the mantle as the pressure increases with depth  and therefore the density increases.

Explanation

• A Unijunction Transistor (UJT) has one junction.
• It is commonly used in triggering circuits for thyristors and other semiconductor devices.

Explanation

Photochemical smog which is mainly composed of ozone (O3), Peroxyacetyl nitrate (PAN) and Nox, is also known as ‘brown air’ where solar radiation is intense.

In seasons of lesser solar radiation or areas, smog formation is incomplete and the air is referred to as grey air.

Explanation

Explanation

The SI unit of force is the newton, symbol N.