Our second HiSET Science practice test includes 18 more multiple choice questions. They are designed to measures your ability to use science content knowledge, apply principles of scientific inquiry, and interpret and evaluate scientific information. This is a great resource for HiSET Science test prep.
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Question 1 of 18
1. Question
Multiple studies have supported the following two hypotheses:
I. Increasing the temperature of Solvent A allows all dissolvable solutes to dissolve faster.II. Substance A is dissolvable in Solvent A, while Substance B is not.
Given these two hypotheses, which of the following is most likely to be true?
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Question 2 of 18
2. Question
Questions 2–5 are based on the following information.
In the early 1800’s, English naturalist RS Edleston discovered a peppered moth (Biston betularia) that was almost totally black. This was highly unusual at the time, because the peppered moth was thought to always be a combination of black and white.By 1900, the populations of peppered moths in English cities were up to 98% black, with only 2% peppered or white. This was the height of the industrial revolution, when English cities were burning large amounts of coal, which blackened tree bark with smoke and soot. In the second half of the 20th century, coal use was dramatically reduced, and the proportion of black moths continues to decrease to this day.
Which of the following is a reasonable hypothesis for why the moth population might have shifted in favor of black moths?
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Question 3 of 18
3. Question
In the early 1800’s, English naturalist RS Edleston discovered a peppered moth (Biston betularia) that was almost totally black. This was highly unusual at the time, because the peppered moth was thought to always be a combination of black and white.By 1900, the populations of peppered moths in English cities were up to 98% black, with only 2% peppered or white. This was the height of the industrial revolution, when English cities were burning large amounts of coal, which blackened tree bark with smoke and soot. In the second half of the 20th century, coal use was dramatically reduced, and the proportion of black moths continues to decrease to this day.
Which of the following would be a feasible experiment to test a hypothesis about the changes in the moth color?
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Question 4 of 18
4. Question
In the early 1800’s, English naturalist RS Edleston discovered a peppered moth (Biston betularia) that was almost totally black. This was highly unusual at the time, because the peppered moth was thought to always be a combination of black and white.By 1900, the populations of peppered moths in English cities were up to 98% black, with only 2% peppered or white. This was the height of the industrial revolution, when English cities were burning large amounts of coal, which blackened tree bark with smoke and soot. In the second half of the 20th century, coal use was dramatically reduced, and the proportion of black moths continues to decrease to this day.
Would you expect to find a greater proportion of black moths in forests outside the city of Beijing, or in rural Nepal?
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Question 5 of 18
5. Question
In the early 1800’s, English naturalist RS Edleston discovered a peppered moth (Biston betularia) that was almost totally black. This was highly unusual at the time, because the peppered moth was thought to always be a combination of black and white.By 1900, the populations of peppered moths in English cities were up to 98% black, with only 2% peppered or white. This was the height of the industrial revolution, when English cities were burning large amounts of coal, which blackened tree bark with smoke and soot. In the second half of the 20th century, coal use was dramatically reduced, and the proportion of black moths continues to decrease to this day.
In polluted areas, would we expect to see a similar change in color in the dog population?
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Question 6 of 18
6. Question
Questions 6–7 are based on the following information.
A study was done to measure the effectiveness of an antibiotic on different bacteria. The antibiotic Vancomycin was tested on 3 types of bacteria: Enterococcus, Staphylococcus, and Streptococcus. Bacterial growth was measured at 3 different durations of time exposure to the antibiotic: 1 hour, 24 hours, and 7 days. The rate of bacterial growth was measured by bacterial colony size at each time interval. The data for each duration was calculated and compiled into the graph shown below. As a control, each bacterial species was also grown with no exposure to the antibiotic. This control culture was measured after 7 days.Based on these results, Vancomycin is most effective against:
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Question 7 of 18
7. Question
A study was done to measure the effectiveness of an antibiotic on different bacteria. The antibiotic Vancomycin was tested on 3 types of bacteria: Enterococcus, Staphylococcus, and Streptococcus. Bacterial growth was measured at 3 different durations of time exposure to the antibiotic: 1 hour, 24 hours, and 7 days. The rate of bacterial growth was measured by bacterial colony size at each time interval. The data for each duration was calculated and compiled into the graph shown below. As a control, each bacterial species was also grown with no exposure to the antibiotic. This control culture was measured after 7 days.What are the independent and dependent variables in this experiment?
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Question 8 of 18
8. Question
Questions 8–13 are based on the following information.
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, they must reflect that wavelength of light, while absorbing every other wavelength of light.
What can be inferred from the above paragraph?
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Question 9 of 18
9. Question
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, they must reflect that wavelength of light, while absorbing every other wavelength of light.
Consider the following two statements:
I. John has a type of color blindness that makes it hard to tell the difference between yellow and green
II. Yellow and green are similar wavelengths of light
Which of the following describes the relationship between statements I and II?
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Question 10 of 18
10. Question
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, they must reflect that wavelength of light, while absorbing every other wavelength of light.
Which of these factors is most likely to affect how well an object reflects light?
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Question 11 of 18
11. Question
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, they must reflect that wavelength of light, while absorbing every other wavelength of light.
A famous equation Einstein founded relates the energy \((E)\) of a light-wave to its wavelength \((\lambda)\), the photoelectric effect:\(E = \dfrac{hc}{\lambda}\)
Where \(h\) is a constant, \(c\) is the speed of light, and \(\lambda\) is the wavelength of light.
Considering the additional information provided above, which of the following is correct?
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Question 12 of 18
12. Question
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, they must reflect that wavelength of light, while absorbing every other wavelength of light.
A famous equation Einstein founded relates the energy \((E)\) of a light-wave to its wavelength \((\lambda)\), the photoelectric effect:\(E = \dfrac{hc}{\lambda}\)
Where \(h\) is a constant, \(c\) is the speed of light, and \(\lambda\) is the wavelength of light.
It is found that the speed of light is lower in glass than it is in air. What can be inferred from this statement?
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Question 13 of 18
13. Question
Light is an electromagnetic wave that propagates in any medium, whether it be air or space or glass or any kind of crystal. A key characteristic of light is its wavelength. The wavelength can have a wide range of values. A range of focus is the visible spectrum, the spectrum at which humans can perceive light:For certain objects to appear the color that they are, it must reflect that wavelength of light, while absorbing every other wavelength of light.
A famous equation Einstein founded relates the energy of a light-wave to its wavelength, the photoelectric effect:\(E = \dfrac{hc}{\lambda}\)
Where \(h\) is a constant, \(c\) is the speed of light, and \(\lambda\) is the wavelength of light.
It is proposed to use ultraviolet light \((\lambda \lt 400 \text{ nm})\) or infrared light \(( \lambda > 700 \ \text{nm} )\) to scan people safely at security checkpoints in airports. What should be used and why?
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Question 14 of 18
14. Question
Questions 14–15 are based on the following information.
Humans are not able to sense direct temperatures, but rather the heat flux onto your skin. Heat flux is defined by the following equation:\(q=\left|k\left(T_{\text{object}} − T_{\text{hand}}\right)\right|\)
Where \(q\) is the heat flux, the temperatures are the temperature of the object you are touching \((T_{\text{object}})\) and your hand \((T_{\text{hand}})\), and \(k\) is a material property of the object you are touching. When skin is contacted with a very high heat flux, it can burn.
When cooking, a pan needs to heat to 200°C. You have the choice to use a stainless steel pan (\(k\) = 16.2 W/mK) or a cast iron pan (\(k\) = 55 W/mK). Based on the values of \(k\) and the definition of heat flux, which of the following is true?
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Question 15 of 18
15. Question
Humans are not able to sense direct temperatures, but rather the heat flux onto your skin. Heat flux is defined by the following equation:\(q=\left|k\left(T_{\text{object}}− T_{\text{hand}}\right)\right|\)
Where \(q\) is the heat flux, the temperatures are the temperature of the object you are touching \((T_{\text{object}})\) and your hand \((T_{\text{hand}})\), and \(k\) is a material property of the object you are touching. When skin is contacted with a very high heat flux, it can burn.
Liquid nitrogen is often used in cryogenic scenarios because of its very cold temperature (−346°F). Despite liquid nitrogen having a very low temperature, researchers must protect themselves against burns from it. Which of the following might suggest why?
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Question 16 of 18
16. Question
Questions 16–18 are based on the following information.
Students are researching families with one brown-haired parent and one red-haired parent to understand how recessive hair-color genes interact with dominant genes. They studied the offspring of a heterozygous brown-haired man (Bb) and a homozygous recessive red-haired woman (bb). Of their four children, three have brown hair and one has red hair. The students prepared the Punnett square that is shown below.
If the couple has another child, what is the probability that this child will have brown hair?
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Question 17 of 18
17. Question
Students are researching families with one brown-haired parent and one red-haired parent to understand how recessive hair-color genes interact with dominant genes. They studied the offspring of a heterozygous brown-haired man (Bb) and a homozygous recessive red-haired woman (bb). Of their four children, three have brown hair and one has red hair. The students prepared the Punnett square that is shown below.
The students then reviewed what would happen if the father had two copies of the allele for brown-hair (BB). In this scenario, the father would be described as:
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Question 18 of 18
18. Question
Students are researching families with one brown-haired parent and one red-haired parent to understand how recessive hair-color genes interact with dominant genes. They studied the offspring of a heterozygous brown-haired man (Bb) and a homozygous recessive red-haired woman (bb). Of their four children, three have brown hair and one has red hair. The students prepared the Punnett square that is shown below.
If both parents were heterozygous, what would be the probability of their next child having red hair?
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