What is one advantage of using a hydroelectric plant?

it provides renewable energy to human populations

For separate ecosystems to be classified as the same type of biome, they must ...

have similar organisms and climates

How is the modern model of an atom different from the Bohr atomic model?

the arrangement of the electrons are different

Why are there regulations that limit the number and size of certain fish that may be kept?

to keep a healthy population of adult fish

It is important to protect air quality because...?

acid rain is caused by air pollution

The best scientific reason for a scientist to accept a specific theory is --

that research and observations support the theory

Human sweat is the direct result of which life functions?

waste removal and temperature control

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Hunt - 8th Science 2009 Released SOL items 21-35

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Answers

1
What is one advantage of using a hydroelectric plant?
it has little effect on wildlife while being constructed
It is expensive to build
it provides renewable energy to human populations
it has little effect on water flow
2
Where is water most likely to become contaminated?
by a dam
at the ocean bottom
in a forest
near a cattle farm
3
Which of these substances is an element?
plastic
steele
chlorine
sugar
4
See image for question.
microscope
binoculars
Ph paper
pan balance
5
For separate ecosystems to be classified as the same type of biome, they must ...
be a least 100 square meters in area
have deciduous forests
have similar organisms and climates
be located along the equator
6
How is the modern model of an atom different from the Bohr atomic model?
the arrangement of the electrons are different
the shapes of the nuclei are different
the number of electrons are different
the masses of the atomic particles are different
7
Two sources of energy that are renewable and available in Virginia are ---
wind power and solar power
petroleum and solar power
natural gas and wind power
coal and hydropower
8
See image for question.
5,000 km
1, 000 km
500,000 km
50,000 km
9
Why are there regulations that limit the number and size of certain fish that may be kept?
to keep other game fish species low
to have people spend more money on fishing
to keep a healthy population of adult fish
to have enough for zoo aquariums
10
It is important to protect air quality because...?
acid rain is caused by air pollution
energy produced by the sun decreases when air is polluted
wind currents change when the air is polluted
storms worsen as air pollution decreases
11
The best scientific reason for a scientist to accept a specific theory is --
to obtain funding for the research
to gain recognition as a great scientist
because there can only be one correct theory
that research and observations support the theory
12
A student makes a drawing of a carbon atom. What should be shown in the nucleus of the atom.
protons
molecules
ions
electrons
13
Human sweat is the direct result of which life functions?
waste removal and temperature control
respiration and cellular growth
reproduction and cellular transport
digestion and disease prevention
14
Which of the following are products of combustion?
additional atoms
liquid and solid water
newly discovered elements
heat and light
15
Robert Hooke looked at a cork under a microscope. He saw little boxes in the cork called ___?
genes
chromosones
nuclei
cells

Hunt - 8th Science 2009 Released SOL items 21-35 Flashcards | StudBud