GED Science Practice Test 1

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Question 1 of 20

1. Question

In a velocity-time graph, acceleration, or positive velocity, is represented by the steepness of the line. Deceleration, or negative velocity, is represented with a slope downward.

Assuming that the following graph demonstrates a sprinter’s velocity over time, how would you best describe this graph?

a. The sprinter accelerated for the majority of the duration of the chart’s plotting time.
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b. It took longer for the sprinter to decelerate than accelerate.
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c. The sprinter achieved the greatest positive velocity during the middle of the race.
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d. The sprinter maintained the same velocity after a burst of increasing acceleration.
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Question 2 of 20

2. Question

A pharmaceutical company is testing a new treatment for high blood pressure. In studying the efficacy of the new medication, they reported the following data to support the claim that the medication is effective.

Group Dosage Results

Group A 20 mg daily No change

Group B 50 mg daily -2.64 (avg.)

Group C 100 mg daily -5.21 (avg.)

What element is missing from their study design that would enhance the legitimacy of their results?

a. Another group receiving a higher dosage.
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b. Another group receiving no dose.
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c. Another group receiving a dose of an alternative blood pressure medication.
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d. All of the above.
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Question 3 of 20

3. Question

The following chart includes details about different phases of matter.

Which of the following answers is not true according to this chart?

a. The particles in a liquid are closer together than those in plasma.
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b. Gases become liquid when energy is added.
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c. Liquids can become solid when energy is removed.
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d. All of the above.
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Question 4 of 20

4. Question

In the scientific method and study designs, what role do variables play?

a. They serve as a proposed explanation for a condition that can be tested.
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b. They are the conditions that remain unchanged.
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c. They are conditions that are changed to determine the effects of the changes.
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d. Variables can serve as any of the above functions in research studies.
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Question 5 of 20

5. Question

In the following marine ecosystem food web, which of the following would be considered a producer?

a. Crabs
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b. Juvenile lobster
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c. Sea lions
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d. Seagrass
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Question 6 of 20

6. Question

The genotypes in organisms’ offspring can be optimized to have useful traits – a process through which those organisms with the most beneficial traits have the most offspring.

What is the name for this process as identified by Charles Darwin?

a. Artificial reproduction
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b. Hybrid trait selection
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c. Natural selection
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d. Natural reproduction
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Question 7 of 20

7. Question

According to the following graph measuring plastic particle concentrations at specific depths of the ocean, which of the following statements is true?

a. There are more particles at the surface than deeper in the ocean.
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b. The greatest concentrations appear to be at depths of between 100 and 600 meters below the surface.
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c. The highest concentrations of plastic particles are at the deepest depths.
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d. All of the above.
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Question 8 of 20

8. Question

According to the following body mass index (BMI) chart, which of the following statements is accurate?

a. A 5-foot-tall individual weighing 205 lbs. would be considered extremely obese.
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b. Shorter people are more likely to have higher BMIs.
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c. Tall people are often underweight.
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d. All of the above.
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Question 9 of 20

9. Question

Gravity is a force which tries to pull two objects toward each other. Anything which has mass also has a gravitational pull. The more massive an object is, the stronger its gravitational pull is. Earth’s gravity is what keeps you on the ground and what causes objects to fall. Gravity is what holds the planets in orbit around the Sun and what keeps the Moon in orbit around Earth. The closer you are to an object, the stronger its gravitational pull is. Gravity is what gives you weight. It is the force that pulls on all of the mass in your body.

As objects move away from the Earth, what gravitational change occurs and how does it impact the weight of an object?

a. Gravitational pull would become stronger, and weight would increase.
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b. Gravitational pull would become stronger and weight would decrease.
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c. Gravitational pull would become weaker and weight would increase.
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d. Gravitational pull would become weaker and weight would decrease.
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Question 10 of 20

10. Question

The following chart displays information about the planets in the solar system, based upon this, which of the following is true?

a. Venus rotates far more slowly than Earth.
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b. Venus’s year is longer than Earth’s.
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c. Mercury is approximately twice the size of Earth.
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d. All of the above.
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Question 11 of 20

11. Question

In the below chart, which of the following statements is true regarding the positive velocity gained during the acceleration period?

a. The sprinter had the same velocity at second two than at second 8.
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b. The sprinter increased velocity at an average of 2 meters per second.
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c. The sprinter’s velocity at second 4 was only 2 meters per second.
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d. The sprinter’s velocity increased disproportionately each second.
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Question 12 of 20

12. Question

In the below study, which variable would be considered the independent variable in the study’s design?

Group Dosage Results

Group A 20 mg daily No change

Group B 50 mg daily -2.64 (avg.)

Group C 100 mg daily -5.21 (avg.)

a. The groups
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b. The dosage
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c. The time at which the medication was administered
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d. Each of these could be considered the independent variable.
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Question 13 of 20

13. Question

According to the below chart, which of the following inferences can be made?

a. Matter with particles that are far apart can be compressed.
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b. Matter with particles that are far apart can conduct electricity.
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c. Matter with particles that are far apart have a lower amount of movement.
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d. All of the above.
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Question 14 of 20

14. Question

The following chart lists the characteristics of metals and nonmetals. What properties of metals would contribute to them being a good option for electrical uses?

a. They are good conductors, have a high melting point and are ductile.
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b. They are good conductors, are opaque and lustrous.
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c. They are transparent and sonorous.
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d. All of the above.
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Question 15 of 20

15. Question

What type of consumer would a shark be in this food web?

a. Primary producer
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b. Primary consumer
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c. Secondary consumer
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d. Tertiary consumer
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Question 16 of 20

16. Question

In normal human reproduction, each embryo has 46 chromosomes – 23 of which are contributed by the egg, and 23 of which are contributed by the fertilizing sperm.

What type of cellular division is used to create the sperm and egg cells to ensure that each human has the same number of chromosomes?

a. Mitosis
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b. Epigenetics
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c. Cytogenetics
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d. Meiosis
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Question 17 of 20

17. Question

Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. One species typically uses the other for a purpose other than food. For example, mites attach themselves to larger flying insects to get a “free ride.”

Which of the following examples demonstrates a symbiotic relationship of commensalism?

a. Hermit crabs using dead snail shells for their homes.
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b. Oxpeckers who eat parasites from zebras.
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c. Fleas that reside on wolves.
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d. All of the above.
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Question 18 of 20

18. Question

Having a widow’s peak is a dominant trait. If an individual has a widow’s peak, yet both biological parents have a straight hairline, which of the following is a possible explanation?

a. Genetic mutation occurred.
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b. The parents did not pass the straight hairline gene onto the child.
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c. Both parents carried the recessive trait.
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d. All of the above.
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Question 19 of 20

19. Question

Which of the following event’s was thought to begin the existence of the universe?

a. Big Boom
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b. Abiogenesis
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c. Big Bang
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d. Quantum state
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Question 20 of 20

20. Question

Which planet is the largest in our solar system?

a. Earth
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b. Mercury
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c. Saturn
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d. Jupiter
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