SCIENCE FLASHCARD BEE CHAMPIONSHIP 2022

Front

Why are metals good conductors of electricity?

Back

they contain free electrons

Front

Which of the following energy sources does NOT originally come from the Sun? Options: wind, geothermal, Ocean thermal energy conversion, hydroelectric

Back

geothermal

Front

Pollination

Back

transfer of pollen from anther to stigma

Front

RADAR is used for

Back

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.

Front

Which scientist was awarded the Nobel Prize in 1911 for discovering radium and polonium?

Back

Marie Curie

Front

Light travels at the fastest speed in ________. Options: glass, water, hydrogen, vacuum

Back

vacuum

Front

Plants receive their nutrients mainly from

Back

soil

Front

Rainbow is due to

Back

refraction and reflection of sunlight by water droplets

Front

As defined in physics, work is:

Back

a scalar quantity

Front

Which of the following is not a vector quantity?

• torque
• velocity
• speed
• displacement

Back

speed