Q: In a copper wire, a temperature increase is the result of which of the following? OPTIONS:
- an increase in the size of the copper particles
- a decrease in the mass of the copper particles
- an increase in the motion of the copper particles
- a decrease in the distance between the copper particles
A: an increase in the motion of the copper particles
A crop of corn plants is genetically modified so that the plants produce a natural pesticide. People are concerned that these corn plants might transfer modified genetic material to other plants. Which of the following is the best way to further modify the plants to prevent them from transferring their genetic materials to other plants?
OPTIONS:
- changing the plants so they do not make pollen
- changing the plants so they do not harm insects
- changing the plants so they cannot produce nutrients
- changing the plants so they cannot be easily identified

changing the plants so they do not make pollen
Q: In which oceanic zone do clams and crabs survive by burrowing in the sand? ---- OPTIONS:
- oceanic
- intertidal
- deep ocean
- open ocean

A: intertidal
Which human organ system produces sperm or egg cells?
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OPTIONS:
- digestive system
- nervous system
- respiratory system
- reproductive system

reproductive system
Question:
If a solid object is taken from Earth far into space, which of the following measurements of the object will change most?
OPTIONS:
- density
- mass
- volume
- weight
Answer:
weight
*Question*: A chemical property of a mineral is evident if the mineral OPTIONS:
- breaks easily when struck with a hammer
- bubbles when acid is placed on it
- is easily scratched by a fingernail
- reflects light from its surface
*Answer*:
bubbles when acid is placed on it