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Test Prep GED Section 3 Science

Section Three Science

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 75

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  • 6 days ago

    last updated

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    overall rating

Question 1 of 75

According to Newtons laws of motion, an object set in motion remains in motion unless a force acts on it. If you suspend an object from a string and make it swing, the object will swing for a while, then slow down and stop. Why does the suspended object stop swinging?

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Correct answer: E

The object set in motion slows down and stops swinging because the force of friction acts on it. The kinetic energy of the object is converted to heat energy through friction with air. Statements a, c, and d are true but are not the reason why the object stops swinging. An object having any mass can maintain motion, so the statement in choice b is wrong.

Question 2 of 75

In an exothermic process, heat is released by the process to the surroundings. An example of an exothermic process is burning wood. An endothermic process requires the input of heat from the surroundings. An example of an endothermic process is boiling water. Which of the following is an endothermic process?

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Correct answer: B

An endothermic process requires the input of heat energy. The only one that requires input of energy (heat) is melting ice (ice melts when heated). The rest of the processes listed give off heat, so they are exothermic.

Question 3 of 75

Change of phase is a process whereby matter changes form (solid, liquid, gas). Which one of the following constitutes a phase change?

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Correct answer: A

When water vapor condenses, gas changes to liquid. Choices b, c, and d involve chemical reactions and cant be considered physical processes. Through exhaling, choice e, air is pushed out of the lungs, but there is no phase change.

Question 4 of 75

The amount of dissolved gas in a liquid solution depends on the pressure of the gas. Under a high pressure, greater amounts of gas can be dissolved. Pressure is used to increase the solubility of carbon dioxide gas in

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Correct answer: C

The soda bubbles you see when you open a can are made of carbon dioxide gas that was dissolved in the soda under pressure. Pressure is not used to dissolve carbon dioxide in any of the substances described in the other choices.

Question 5 of 75

The boiling point of water decreases with increasing pressure. At high altitudes, the atmospheric pressure is lower than at sea level. Where would you expect to find the highest boiling point temperature of water?

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Correct answer: D

The boiling point decreases with increasing pressure. So, the lower the pressure, the higher the boiling point. At high altitudes, the atmospheric pressure is low, so the boiling point should be higher at higher altitudes. The highest altitude listed is at the top of Mount Everest.

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Charles Sirois
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As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Lance Chambers
United States
Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
Italy
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
Netherlands
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
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The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
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Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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