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GED-Science Latest Exam (Sep 2017)

[Free] 2017(Sep) EnsurePass Testking GED GED-Science Dumps with VCE and PDF 21-30

September 26, 2017

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2017 Sep GED Official New Released GED-Science
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GED Science Exam

Question No: 21

When water evaporates from a surface, the surface is cooled. From this information, which of the following would MOST likely keep the human body at a constant temperature?

  1. perspiring more when the body becomes overheated

  2. breathing rapidly on hot days

  3. shivering when the outside temperature is very cold

  4. drinking juices rather than water when exercising

  5. avoiding drinking too much water when exercising

Answer: A

Question No: 22

The left side of the brain dominates in verbal skills, reading, writing, and logical thinking. The right side of the brain is adept at space and pattern perception. While the right side does not express speech, the right side dominates in visual imagery and spatial relationships.

The left side of the brain would dominate in which of the following activities?

  1. using depth perception to park a car

  2. recognizing a person’s face

  3. recognizing a song on the radio

  4. having a conversation on the telephone

  5. looking at a picture in a museum

Answer: D

Question No: 23

During an electrical storm, a lightning flash is seen before the sound of thunder that it generated can be heard. The farther a person is from the storm, the greater the time interval between the light flash and the arrival of the sound. Which of the following statements best explains this phenomenon?

  1. Light travels faster than sound.

  2. Sound travels somewhat faster than light.

  3. Electricity can travel rapidly in the Earth’s atmosphere.

  4. The density of the atmosphere decreases the speed of light.

  5. Lightning consists of a flash of light followed by a loud sound.

Answer: A

Question No: 24

Meteorites are broken fragments formed from comets and by collisions between asteroids orbiting the Sun in the belt between Mars and Jupiter. Meteorites range in size from fine dust particles to bodies many miles in diameter that produce large craters when they strike Earth, Mars, or the Moon.

From what sources do many meteorites originate?

  1. the center of the Sun

  2. collisions among solar showers from the stars

  3. fragments of Jupiter’s moons

  4. Mars

  5. asteroids

Answer: E

Question No: 25

Scientists are unraveling the mystery of how early life-forms were first able to duplicate themselves. Today, it is known that reproduction and growth requires both DNA and proteins. DNA holds the crucial genetic instructions for assembling amino acids into proteins. Proteins are key molecules that make up the structure of future generations. Precisely, how does this process occur? RNA seems to hold the key to an answer.

Which statement provides the best summation about the duplication of life-forms presented above?

  1. Investigating questions of origin is an artist’s function, not that of a scientist.

  2. Questions of origin are best resolved legislatively, by a vote among scientists.

  3. RNA may be involved in linking protein synthesis with DNA.

  4. DNA is a small, very simple molecule.

  5. Research studies should concentrate on copying protein molecules to form other protein

molecules.

Answer: C

Question No: 26

Wild rabbits in Alaska have short ears, whereas those found in Arizona have long ears. For the Alaskan rabbits, this is an adaptation to which of the following?

  1. amount of precipitation

  2. meager food supplies

  3. number of predators

  4. parasitic fungi

  5. cold temperatures

Answer: E

Question No: 27

Which of the following claims from the flower seed package is based on FACT rather than on opinion?

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  1. produced with tender, loving care

  2. provide beautiful flowers for your lovely home

  3. are more colorful than other brands

  4. make the most brilliant display in town

  5. sprout within 2 weeks of planting date

Answer: E

Question No: 28

A solid dissolves more rapidly if the solid’s surface area in contact with the water is increased.

Which would result in sugar dissolving more quickly in water?

  1. forming the sugar into large crystals

  2. grinding up the sugar to a powder

  3. using brown sugar rather than white sugar

  4. forming the sugar into a cube

  5. cooling the mixture of sugar and water

Answer: B

Question No: 29

Some minerals, including iron, are necessary for plant growth. Other minerals are needed to help the plant use these minerals. Recently, scientists found that nickel is necessary for plants to absorb iron from the soil. Without iron, plants cannot carry on photosynthesis.

What will happen if there is insufficient nickel in the soil?

  1. The plant will use more fertilizer.

  2. The plant will require more heat.

  3. The plant will lose more water.

  4. The plant will produce little food.

  5. Less fertilizer will be necessary.

Answer: D

Question No: 30

The amount of carbon dioxide in the atmosphere is increasing, therefore contributing to the phenomenon called the greenhouse effect. The end result is an increase in average temperatures worldwide.

A decrease in global warming could result if we reduced the consumption of materials that give off carbon dioxide when burned.

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To reduce global warming, what should be used LESS?

  1. fossil fuels

  2. geothermal energy

  3. solar energy

  4. nuclear energy

  5. electricity

Answer: A

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