questions and 100% correct answers
2025
Which of these is the best explanation of how a smooth round stone became smooth?
A. continuous freezing and thawing
B. volcanic action
C. it fell off the side of a cliff
D. it was in a stream for a long time - ANSWER D. it was in a stream for a long time
When a lobster grows a claw to replace one that was lost, the process is called
A. restoration
B. retraction
C. regeneration
D. reproduction - ANSWER C. regeneration
Any astronomical body that revolves around a larger body is called
A. a nova
B. a comet
C. a satellite
D. an astroid
E. a meteoroid - ANSWER C. a satellite
In chemistry, to be classified as an organic substance must contain
, A. sugar molecules
B. sodium atoms
C. carbon atoms
D. water molecules - ANSWER C. carbon atoms
According to their locations on the Periodic Table, argon (Ar) and neon (Ne) are
A. ionic
B. radioactive
C. liquid metals
D. noble gases - ANSWER D. noble gases
To test the effectiveness of plant fertilizer, groups of plants are grown with different types of
fertilizer. A control group of plants would
A. not be given any fertilizer
B. be grown with a mixture of all fertilizers
C. not be needed unless the results were unclear
D. be grown in a different location from the other groups - ANSWER A. not be given any fertilizer
When scientists measure a liquid's resistance to flow, they are measuring he liquid's
A. density
B. solubility
C. viscosity