QUESTION: 13

The disposal of solid wastes is a growing problem. One solution is to bury waste between layers of earth to build up low-lying land. Another solution is to burn waste to produce energy.
Which information is needed most to select the best method for maintaining a clean environment?

the cost of recycling materials instead of burning
the amount of solid waste disposal each year
the amount of pollutants produced by each procedure
the length of time each procedure takes to complete
the laws pertaining to each procedure

Answer(s): C

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QUESTION: 14

Work is done on an object when a force is applied, causing the object to move.

Which example best illustrates this scientific idea?

hitting a ball with a bat
sitting on a chair
standing in place
holding a box
pushing against a wall

Answer(s): A

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QUESTION: 15

Which statement correctly describes distilled water?

is the same as spring water
has no home use
is the same as hard water
is the same as tap water
consists primarily of water molecules

Answer(s): E

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QUESTION: 16

Water on Earth is found in many places. It is found in the atmosphere, the ground, oceans, lakes, rivers, and in the polar ice caps. The continuous movement of water from the atmosphere to Earth's surface and back to the atmosphere, called the water cycle, has four stages: storage on Earth, evaporation from Earth, precipitation from the atmosphere, and runoff on the surface of Earth.

Based on the information and diagram, where would most of the storage of water on Earth occur?

rocks
ocean
trees
top layer of sandy soil
ground cover

Answer(s): B

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QUESTION: 16