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TASC Science Practice Test 1

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Question 1 of 10

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.
- b. It took longer for the sprinter to decelerate than accelerate.
- c. The sprinter achieved the greatest positive velocity during the middle of the race.
- d. The sprinter maintained the same velocity after a burst of increasing acceleration.
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Question 2 of 10

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.
- b. Another group receiving no dose.
- c. Another group receiving a dose of an alternative blood pressure medication.
- d. All of the above.
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Question 3 of 10

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.
- b. Gases become liquid when energy is added.
- c. Liquids can become solid when energy is removed.
- d. All of the above.
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Question 4 of 10

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.
- b. They are the conditions that remain unchanged.
- c. They are conditions that are changed to determine the effects of the changes.
- d. Variables can serve as any of the above functions in research studies.
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Question 5 of 10

5. Question
In the following marine ecosystem food web, which of the following would be considered a producer?
- a. Crabs
- b. Juvenile lobster
- c. Sea lions
- d. Seagrass
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Question 6 of 10

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
- b. Hybrid trait selection
- c. Natural selection
- d. Natural reproduction
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Question 7 of 10

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.
- b. The greatest concentrations appear to be at depths of between 100 and 600 meters below the surface.
- c. The highest concentrations of plastic particles are at the deepest depths.
- d. All of the above.
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Question 8 of 10

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.
- b. Shorter people are more likely to have higher BMIs.
- c. Tall people are often underweight.
- d. All of the above.
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Question 9 of 10

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

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.
- b. Venus’s year is longer than Earth’s.
- c. Mercury is approximately twice the size of Earth.
- d. All of the above.
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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.)

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TASC Science Practice Test 1

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