GED Science Practice Test 2

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Take GED Science Exam #3

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Question 1 of 20

1. Question

The following equation shows the molecular reaction of the burning of acetylene in a welding torch.

Which of the following statements is true about this equation?

a. Diatomic oxygen is necessary for this combustion process.
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b. The output after combustion includes carbon monoxide.
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c. There are more atoms present in the molecules prior to combustion.
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d. All of the above.
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Question 2 of 20

2. Question

In a bike race, the racers achieved the following times related to their distance. Each racer could opt to complete the full distance, a half distance, or a quarter distance.

Racer Distance (m) Time (s)

1 1600 142

2 1600 160

3 3200 330

4 3200 400

5 3200 386

6 6400 610

7 6400 625

Which racer had the highest velocity?

a. Racer 1
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b. Racer 4
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c. Racer 6
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d. Racer 7
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Question 3 of 20

3. Question

The following chart indicates the different boiling points of several different organic compounds.

Which of the following statements is true?

a. Group 16 has the lowest average boiling point.
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b. Compounds H2S and SIH4 have a similar boiling point.
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c. Group 14 is most like Group 16 in terms of boiling points.
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d. Compounds PH3 and HCl have a similar boiling point.
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Question 4 of 20

4. Question

Which of the following is found in all states of matter at room temperature?

a. Metals
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b. Nonmetals
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c. Neither
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d. Both
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Question 5 of 20

5. Question

The following cladogram illustrates the evolutionary relationships and similarities of different species. Based upon this information, which of the following statements is true?

a. All of the organisms evolved to have an amniotic egg.
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b. The caiman is more similar to parrots than frogs.
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c. Humans are more similar to sharks than hares.
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d. All of the above.
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Question 6 of 20

6. Question

The following chart shows the usage rate of biofuels in 2017 in million tons of oil equivalent (Mtoe). Based upon this data, how much of the total biofuel use is done by natural gas vehicles (NGV)?

a. 0.16%
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b. 1.6%
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c. 2.1%
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d. 6.1%
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Question 7 of 20

7. Question

Based upon the following diagram, in which genotype(s) would the allele be recessive?

a. DD
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b. DD and Dd
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c. dD and dd
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d. dd
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Question 8 of 20

8. Question

In the following ecosystem, a dramatic increase in the red winged blackbird population could lead to a corresponding decrease in what other species populations?

a. Beetles and Insects
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b. Spiders and willow
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c. Insects and spiders
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d. Spiders and beetles
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Question 9 of 20

9. Question

Based upon the following table concerning data about the different atmospheric layers, which of the following statements is true?

a. The exosphere is the thinnest atmospheric layer.
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b. Nitrogen is primarily abundant in the troposphere.
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c. Ambient conditions grow warmer as you move away from the surface of the Earth.
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d. All of the above.
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Question 10 of 20

10. Question

Which of the following statements is true about the earth’s inner core?

a. It is comprised of an upper mantle, a transition zone, and a lower mantle.
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b. It features convergent, divergent, and transformant tectonic plates.
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c. It is cooler than part of the inner core.
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d. All of the above.
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Question 11 of 20

11. Question

The following diagram represents the electromagnetic spectrum, which displays the range of energy from low energy, low-frequency waves to high energy, high-frequency waves in nanometers, and Hertz.

Which of the following statements is true?

a. As the wave frequency increase, humans are better able to see the waves.
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b. As energy increases, Hertz values decrease.
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c. The color blue has a higher Hertz value than the color red.
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d. All of the above.
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Question 12 of 20

12. Question

In the below chart, what is the mean time for completing 1600 meters including all racers?

Racer Distance (m) Time (s)

1 1600 142

2 1600 160

3 3200 330

4 3200 400

5 3200 386

6 6400 610

7 6400 625

a. 160.27
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b. 157.93
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c. 169.34
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d. 166.96
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Question 13 of 20

13. Question

Which two compounds on the chart reflect the most extreme difference in boiling points?

a. H2O and CH4
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b. HF and H2O
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c. CH4 and SnH4
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d. PH3 and HCl
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Question 14 of 20

14. Question

What type of diagram is used to predict the probability that an offspring may possess a particular genotype?

a. Heredity chart
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b. Punnett square
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c. Inheritance diagram
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d. Hybrid chart
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Question 15 of 20

15. Question

The following diagram represents what cellular process?

a. Mitosis
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b. Meiosis
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c. Mutation
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d. Deletion
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Question 16 of 20

16. Question

According to the chart, which of the following statements is true?

a. Gasoline use is decreasing.
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b. Electricity using alternative fuel sources is increasing.
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c. Approximately the same amount of energy is consumed by alternative fuels as diesel.
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d. None of the above.
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Question 17 of 20

17. Question

In the following Punnett square, a child’s chances of developing Sickle Cell disease (s) are outlined based on the genetic characteristics of both parents. Which of the following statements is correct?

a. The child has a 25% chance of having the disease.
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b. The child has a 50% chance of having the disease.
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c. The child has a 75% chance of having the disease.
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d. None of the above.
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Question 18 of 20

18. Question

In the below ecosystem, which of the following events would have an impact on every single species?

a. A drought leading to very little or no willow growth.
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b. The spread of a disease exclusive to frogs.
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c. The spread of a disease exclusive to frogs.
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d. All of the above.
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Question 19 of 20

19. Question

Which of the following terms describes the early stage of evolution for a star, before nucleosynthesis has begun?

a. Neutron star
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b. Protostar
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c. White dwarf
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d. Supergiant star
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Question 20 of 20

20. Question

Which of the following elements has the highest atomic weight?

a. Manganese
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b. Tungsten
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c. Sulfur
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d. Lead
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