SCIENCE QUIZ BEE CHAMPIONSHIP 2022

EASY: Metals are good conductors of electricity because

• they contain free electrons

•  the atoms are lightly packed

• they have high melting point

• All of the above

EASY: Which of the following energy sources does NOT originally come from the Sun?

• wind

• geothermal

• Ocean thermal energy conversion

• hydroelectric

EASY: Pollination is best defined as

• transfer of pollen from anther to stigma

• germination of pollen grains

• growth of pollen tube in ovule

• visiting flowers by insects

EASY: RADAR is used for

•  locating submerged submarines

• receiving a signals in a radio receiver

• locating geostationary satellites

• detecting and locating the position of objects such as aero planes

Answer explanation

RADAR is a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source.

EASY:  Which of the following scientists was awarded the Nobel Prize in 1911 for the discovery of the radioactive elements, radium and polonium?

• John Dalton

• Dmitri Mendeleev

• Emil Fischer

• Marie Curie

EASY: Light travels at the fastest speed in ________.

• glass

• water

• hydrogen

• vacuum

EASY: Plants receive their nutrients mainly from

• chlorophyll

• atmosphere

• light

• soil

EASY: Rainbow is due to

• absorption of sunlight in minute water droplets

• diffusion of sunlight through water droplets

• ionization of water deposits

• refraction and reflection of sunlight by water droplets

EASY: As defined in physics, work is:

• a vector quantity

• a scalar quantity

• Always a positive quantity

• always zero

EASY: Which of the following is not a vector quantity?

• torque

• velocity

• speed

• displacement