Phone: + 1 507 4052 660

Physical science module 5 | Science homework help


Module: 5- A: Chapter Questions:

Read the chapter and answer these questions on your own



Chapter – 15. Temperature & Heat:


1)    What is the difference between Temperature and Heat?


2)    What is Specific Heat Capacity?


3)    Why are there spaces between railroad tracks? Why the railroad track is not continuous as one piece miles after miles?


4)    Why water is denser than Ice?


5)    Why the volume of liquid water decreases as the temperature is increased from 0 degree-C to 4 degree-C? Does the volume of water increase or decrease after 4 degree C?


Chapter – 16. Heat Transfer:


1)    What are the differences among the Conduction, Convection, and Radiation?


2)    Comment on the statement that the peak frequency of radiant energy is directly proportional to the absolute temperature of the emitter.


3)    What are the differences among the Emission, Absorption, and Reflection of Radiant Energy?


4)    Define Newton’s Law of Cooling.


5)    What is Greenhouse Effect?



Chapter – 17. Change of Phase:


1)    What is the difference between Evaporation and Condensation?



2)    Why boiling is called a cooling process?


3)    What is the difference between Melting and Freezing?



4)    What is Latent Heat?



5)    What happens to the Heat and Temperature during a Phase Change? (For example: Solid to Liquid, Liquid to Gas, or Solid to Gas directly).


Chapter – 18. Thermodynamics:


1)    What is absolute zero temperature?


2)    What is the First law of Thermodynamics? Give some examples from the Meteorology.


3)    What is Adiabatic Process?



4)    What is Second law of Thermodynamics? Give some examples.



5)    Explain Entropy


Chapter – 19. Vibrations & Waves:


1)    What is Frequency, Wavelength, Period and Speed of a wave?


2)    What is the difference between Transverse wave and Longitudinal wave?



3)    Explain Interference of Waves. What is the difference between Constructive Interference, and Destructive Interference?


4)    Interpret Standing wave.


5)    Explain Doppler Effect.

6)    What is the difference between Bow Waves, and Shock Waves? Define Supersonic and Sonic Boom.



Chapter – 20. Sound:


1)      What is Compression and Rarefaction of Sound wave?


2)    What is the Speed of Sound in air?


3)    What is Reflection and Refraction of Sound? Give an example.



4)    What is Resonance?


5)    Explain Interference of Sound waves.


6)    Explain Beats


Chapter – 21. Musical Sounds:


1)    What is the Pitch of a sound wave?


2)    Explain Sound Intensity and Loudness.


3)    Name some musical instruments.


4)    What is Fourier Analysis? Give some examples.


5)    What do you know about CD and DVD. How are those made and how do those work?

Module: 5- B: Chapter Exercises:

Exercise questions are at the end of each chapter. Answer these in details


Chapters/ Topics                    Exercise#


15. Temperature & Heat                 1, 10, 23, 33, 56


1.     In a meeting room, there are chairs, a table, and people. Which of these things has a temperature ( a) lower than, ( b) greater than, or ( c) equal to the temperature of the air?



10. If you drop a hot rock into a pail of water, the temperature of the rock and the water will change until both are equal. The rock will cool and the water will warm. Does this hold true if the hot rock is dropped into the Atlantic Ocean? Explain.


23. In times past, on a cold winter night, it was common to bring a hot object to bed with you. Which would keep you warmer through the cold night— a 10- kg iron brick or a 10- kg jug of hot water at the same temperature? Explain.


33. After you have driven a car for some distance, why does the air pressure in the tires increase?

56. How does the combined volume of the billions and billions of hexagonal open spaces in the structures of ice crystals in a piece of ice compare with the portion of ice that floats above the waterline?



16. Heat Transfer                            1, 19, 33, 46, 56 58


1. On a cold day, why does a metal doorknob feel colder than the wooden door?



19. Why is it incorrect to say that, when a hot object warms a cold one, the increase in temperature of the cold one is equal to the decrease in temperature of the hot one? When is this statement correct?


33. Air density is normally less above any point in air than below, providing a “ migration window” in air. How does this affect the movement of faster- moving molecules in air?


46. When there is morning frost on the grass in an open park, why is frost unlikely to be found on the ground directly beneath park benches?


56. Make up a multiple- choice question that would test a classmate’s understanding of the distinction between conduction and convection. Make another in which the term radiation is the correct answer.


17. Change of Phase              1, 12, 24, 42, 57


1. Alcohol evaporates more quickly than water at the same temperature. Which produces more cooling— alcohol or the same amount of water on your skin?


12. Porous canvas bags filled with water are used by travelers in hot weather. When the bags are slung on the outside of a fast- moving car, the water inside is cooled considerably. Explain.




24. When can you withdraw heat from something without lowering its temperature?


42. Why is very cold ice “sticky”?


57. Why will spraying fruit trees with water before a frost help to protect the fruit from freezing?


18. Thermodynamics             1, 10, 26, 35, 48, 50


1. A friend said the temperature inside a particular oven is 500 and the temperature inside a particular star is 50,000. You’re unsure whether your friend meant Celsius degrees or kelvins. How much difference does it make in each case?


10. When you blow up a balloon, do you slightly warm the balloon? When air is allowed to rush out of it, how, if at all, does the temperature of that expanding air change?


26. Could you warm a kitchen by leaving the door of a hot oven open? Explain.


35. Molecules in the combustion chamber of a rocket engine are in a high state of random motion. When the molecules are expelled through a nozzle in a more ordered state, will their temperature be more, less, or the same as their initial temperature in the chamber before being exhausted?

48. ( a) If you spent 10 minutes repeatedly shaking and throwing down a pair of coins, would you expect to see two heads come up at least once? ( b) If you spent an hour shaking a handful of 10 coins and throwing them down, would you expect to see all 10 come up heads at least once? ( c) If you stirred a box of 10,000 coins and tossed them repeatedly on the floor all day long, would you expect to see all 10,000 appear as heads at least once?


19. Vibrations & Waves                  1, 11, 21, 31, 39


1. Does the period of a pendulum depend on the mass of the bob? On the length of the string?


11. If the speed of a wave doubles while the wavelength remains the same, what happens to the frequency?


21. Red light has a longer wavelength than violet light. Which has the greater frequency?


31. Why is lightning seen before thunder is heard?


39. How does the Doppler effect aid police in detecting speeding motorists?


20. Sound                               2, 7, 27, 33, 49


2. If the Moon blew up, why would we not hear it?


7. What does it mean to say that a radio station is “ at 101.1 on your FM dial”?


27. If the distance from a bugle is tripled, by what factor does the sound intensity decrease? Assume that no reflections affect the sound.


33. Why is it a sensible procedure for soldiers to break step when marching over a bridge?


49. A piano tuner using a 264- Hz tuning fork hears 4 beats per second. What are two possible frequencies of vibration of the piano wire?



21. Musical Sounds                2, 11, 18, 31, 45, 46


2. As the pitch of sound increases, what happens to the frequency?


11. The strings on a harp are of different lengths and produce different notes. How are different notes produced on a guitar, where all strings have the same length?


18. Would a plucked guitar string vibrate for a longer time or a shorter time if the instrument had no sounding board? Why?



31. Why does your voice sound fuller in the shower?


45. Make up a multiple- choice question that distinguishes between any of the terms listed in the Summary of Terms.




Unlock Better Papers
Pages (550 words)
Approximate price: -

Why Hire a Professional Essay Writer from essayprohire

The quality of an essay is important

If you want to be successful in the essay writing world, it’s important to make sure that the quality of your work is high. A professional essay writer from us will be able to provide you with high-quality papers, and they will also have the experience necessary to write effective essays. This means that you won’t have to worry about any errors or problems with your essays – they will be perfect.

Our Customer service is top-notch

If you have a problem with your essay, or if you just need a little help writing it, then you should contact our customer service. Our customer service is always available to help you with whatever you need – from getting your essay correct to helping you with the grammar and punctuation. We’re here to help, so don’t hesitate to call us today!

Our offer on Unlimited Revisions

If you're looking for essaywriting help, then you should definitely consider getting help from a essaywritinghelpnow. However, if you're not sure what you need or whether you have the time or resources to do the research yourself, then you might want to consider getting unlimited revisions done by our team of experts. O

Our guarantee to Confidentiality

We understand the importance of confidentiality, and we will never share your personal information with anyone without your permission. That’s why we offer a one-year guarantee that your essays will remain confidential. If you decide that you no longer want us to write your essays, we will still respect your privacy and will destroy all the evidence that we had of your work.

Our Reliability

We believe that it is important to have a reliable and trustworthy essaywriter. That’s why we offer a 100% satisfaction guarantee on all of our essays. We take the time to get to know our clients, and we will always make sure that our essays are of the highest quality. We understand that not everyone is happy with their first essay, so we want to make sure that you’re always satisfied with the results of our work.

Our punctuality and quality

At our company, we pride ourselves on our punctuality and quality. We understand that it can be difficult to get essays written on time, and we’re here to help you out! Our writers are always available to help you with your essay, and we guarantee that you’ll receive the best possible product. We also have a strict no-nonsense policy when it comes to plagiarism, so you can be sure that your essay will be of the highest quality.


Try it now!

Calculate the price of your order

We'll send you the first draft for approval by at
Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.


Our Services

So much stress and so little time? Take care of yourself: let us help you with your tasks. We offer all kinds of writing services.


Custom Essay Writing Services

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission and Business Papers

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing and Proofreading

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.