Tag: science & technology

Male bears are called boars, while female bears are called sows. This terminology is consistent across most bear species. Young bears are called cubs.

Vampire bats have fewer teeth than other bat species because they feed on blood, which doesn't require chewing. Their teeth are specialized for making small, precise cuts to access blood vessels from their prey. They then lap up the blood rather than chewing food.

Camels are desert-adapted animals that can survive for weeks without water due to their efficient water conservation mechanisms. Rats require regular water access and cannot survive nearly as long. The statement that a rat cannot last longer without water than a camel is therefore false.

Mars has two moons: Phobos and Deimos. Both are small, irregularly shaped moons that were discovered in 1877. No other moons have been confirmed orbiting Mars.

A dielectric is the opposite of a conductor - it is an insulating material that does not conduct electricity easily. Dielectrics have high electrical resistance and are used to block current flow, while conductors like copper allow electricity to flow freely. Common dielectrics include rubber, glass, plastic, and ceramic materials. The statement is false because dielectrics and conductors are fundamentally different in their electrical properties.

The abacus is also called a 'Counting Frame,' referring to its physical structure with beads on rods or wires within a frame. This ancient calculating tool has been used across civilizations for arithmetic operations. The other options are not accurate alternative names for the abacus.

'Put in' in abacus terminology refers to the action of pushing counters (beads) toward the crosspiece (central bar) to register values. This fundamental movement is essential for performing calculations on the abacus. The statement is true as it accurately describes this operation.