GED GED SCIENCE Dumps PDF Free Download - Page: 10

QUESTION: 46

Which factor affects fish survival in lakes with acid deposition?

adjacent soil's ability to neutralize acid
lake's elevation above sea level
number of trees surrounding the lake
quantity of water lilies on the lake
types of fowl inhabiting wooded areas near the lake

Answer(s): A

QUESTION: 47

Science and technology are two related but distinct fields. Their major components are illustrated below.

Which statement represents a technological solution to a problem?

Astronauts conduct an experiment to see how bacteria grow in a space station.
Biologists study birds to learn how they migrate.
Students observe cell division under a microscope.
Engineers design an automobile engine that produces less exhaust.
Geologists analyze soil samples to find out soil composition.

Answer(s): D

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QUESTION: 48

Beginnings of new time spans are characterized by major changes in life-forms. Which time would represent the beginning of a new time period (in millions of years ago)?

Answer(s): D

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Some recipes suggest that certain foods, such as sauces and frostings, be prepared in a double boiler, such as the one shown at the left.

Which statement best describes the advantage of using a double boiler?

The food in the top pan absorbs the heat energy from the water and keeps the temperature of both substances just below the freezing point of water.
The food in the top pan will be cooked at a temperature several degrees higher than the boiling point of the water.
As long as boiling water is in the bottom pan, the food will be cooked at the constant temperature of the boiling water.
Less energy is required for the food to reach a boiling temperature than for the water to reach a boiling temperature.
Twice as much food can be cooked using half the amount of energy.

Answer(s): C

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QUESTION: 50

Exhibit:

Based on the information, which statement best summarizes the role of the Gammarus as a biomonitor?

provide an effective tool for assessing the level of certain toxic metals in fresh water
provide for the rapid cleanup of water pollutants
prevent water pollution from occurring
destroy infectious bacteria and viruses
aid in measuring the photosynthetic rate of fresh water plants

Answer(s): A

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GED Section 3: Science GED SCIENCE Dumps in PDF

Free GED GED SCIENCE Real Questions (page: 10)

QUESTION: 46

QUESTION: 47

QUESTION: 48

QUESTION: 49

QUESTION: 50