ESJH Physical Science - Med 101

Hello Students:

I apologize for not posting the quiz answers here. I'm having technical difficulty on my computer (I think the projector might have fried it). So I'm posting this from a friend's computer (yes I do have friends).

I know you'll do your best to get those answers (as they are in the book and in your notes). Call me if you have dire questions. I've included lots of bonus questions on the test so everything should work out.

best,
J. Gibney

Extra Credit: up to 8 points. Design a Poster about the Doppler Effect. Must include a definition of what it is, 3 Examples, Color Graphics, and must be Poster Board Size. Due Friday.

Physical Science Weekly Syllabus #6: Sept. 27 – Oct. 1

Monday: Progress Report Distribution this Week, Introduction to Electromagnetism

Tuesday: Share Current Events, Properties of Electromagnetic Waves

Wednesday: Quiz, Wednesday Guided Reading, Laboratory Exercise in LAB!!!

Thursday: Wrap-up of Electromagnetism, and Introduction to Electricity and Magnetism (Circuits and Magnets)

Friday: Celebration Test, Continuation of Electricity, 100% Sweet Raffle

Note: BRING BOOK to CLASS EVERY DAY THIS WEEK! Thanks =) *note you may leave books in room but you do so at your own risk (if stolen you still must pay for new book)

Homework:
Monday
1) Current Event (Must be on Science) – Due Tuesday

Tuesday
2) BOOK CHECK!!! 5 points (have your book with your name in it)
3) Choose One of the Following: – Due Wednesday
a. Complete Questions 1-4 pg 395
b. Write 1 paragraph (5 sentences) about how sunscreen works with electromagnetic waves.

Wednesday 1) Choose one of the following – Due Thursday
a. Complete Questions 1-5 on page 401
b. Make a T-chart with 3 reasons that electromagnetic waves can be good for mankind and 3 reasons they can hurt humans

Thursday
1) Study for Test. Review the sample quiz questions. Answers on www.esjhbiology.blogspot.com
2) Check in on Unit Project Progress (see handout)

Friday
1) Work on Unit Project and Have a FANTASTIC Weekend!!!

Write all Answers on Looseleaf (do not copy question).

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.

____ 1. Electromagnetic waves ____.
a. are compressional waves
b. must have a medium
c. are transverse waves
d. are generated by static electricity


____ 2. The ____ is the particle that carries radiant energy.
a. proton
b. neutron
c. photon
d. electron


____ 3. Electromagnetic radiation with the shortest wavelengths is ____.
a. gamma rays
b. radio waves
c. ultraviolet waves
d. infrared waves


____ 4. The electromagnetic waves with wavelengths slightly longer than visible light are ____.
a. microwaves
b. ultraviolet waves
c. infrared waves
d. X rays


____ 5. The frequency of purple light is ____ that of yellow light.
a. higher than
b. the same as
c. lower than
d. faster than


____ 6. ____ are used for medical imaging.
a. Ultraviolet waves
b. X rays
c. Infrared waves
d. Gamma rays


____ 7. Gamma rays are dangerous because they ____.
a. break down molecules and cells
b. fluoresce
c. cause sunburn
d. cause food to spoil


____ 8. Television uses ____ to transmit signals.
a. microwaves
b. visible light waves
c. infrared waves
d. radio waves


____ 9. The part of the electromagnetic spectrum usually used for communication is ____.
a. radio waves
b. ultraviolet waves
c. infrared waves
d. gamma rays


____ 10. Data from the U.S. Census shows that people who have No High School Diploma earn $15,570 a year, people with a High School Diploma earn $22,481 a year and people with a Bachelor’s Degree earn .
a. $5 a year
b. $0 a year
c. $40,347 a year
d. $2 a year

Completion
Complete each sentence or statement.

11. As the wavelength of an electromagnetic wave gets longer, the frequency ____________________.

12. The entire range of electromagnetic frequencies is called the ___________________________________.

13. Police use radio waves in a method called ____________________ to detect speeders.

14. I found today’s activity interesting. Why or why not?

Posted Early this week for your convenience. Good luck studying.

Phys Energy Sample Quiz Questions Answer Guide

MULTIPLE CHOICE
1. D
2. B
3. C
4. B
5. D
6. C
7. A

COMPLETION
8. thermal
9. mechanical

SHORT ANSWER
10. Nuclei are broken apart.
11. D
12. a ball on a desk has potential energy; as it falls, it has both potential energy and kinetic energy
13.
thermal - Energy used in temperature, pressure, and volume exchanges. Usually involves heat. Example: lighting a candle

chemical – reactions involving chemical compounds Example: Rust comes from combination of iron, water, and oxygen to form a hydrated iron oxide, commonly called rust.

electromagnetic – involving electricity Example: Lightning

mechanical - motions of objects and their response to forces (mostly what we have been studying) Example: throwing a ball and calculating the energy involved

nuclear energy - energy released during the splitting or fusing of atomic nuclei. Example: Nuclear power plants.

PROBLEM
14. 1/2 mv2 = 1/2 (18 + 62)(7)2 = 1,960 J

15. (m)(9.8)(h) = (90)(9.8)(4) = 3,528 J

Thanks for checking out this site. Studying the practice quiz will really help you on the Test this Friday.

1. ANS: A

2. ANS: C

3. ANS: B

4. ANS: A

5. ANS: B

6. ANS: D

7. ANS: C

8. ANS: B

9. ANS: A

10. ANS: C

11. ANS: A

12. ANS: C

13. ANS: A

14. ANS: B

15. ANS: C

16. ANS: D

17. ANS: A

18. ANS: B

19. ANS: A

20. ANS: A
21. ANS: D

22. ANS: B

COMPLETION

23. ANS: balanced

24. ANS: final velocity

25. ANS: Static

26. ANS: rolling

27. ANS: different

28. ANS: northwesterly

29. ANS: zero

SHORT ANSWER
30. ANS: 60ºC

31. ANS: The two cars are traveling in different directions.

32. ANS: A: 250 kg m/s; B: 12 kg; C: 12 m/s; D: 20 kg

33. ANS: Crumple the paper into a ball to reduce the air resistance.

34. ANS: They will hit at the same time. Vertically, they travel the same distance under the influence of the same force, gravity; horizontal motion doesn't count.

35. ANS: Mass measures the amount of matter; weight measures the force of gravity on the matter.

PROBLEM
36. ANS: 3.75

37. ANS: 5.675

38. ANS: s = d/t = 10 km/40 min = 0.25 km/min

39. ANS: d = s ´ y = 227 km/h ´ (2.00 h) = 454 km

40. ANS: vf – vi/t = (96 m/s – 32 m/s)/ 8.0 s = 8.0 m/s2

41. ANS: 250 kg ´ m/s p = mv = 10 kg ´ 25 m/s = 250 kg ´ m/s


42. ANS: 48 N
F = ma = 12 kg ´ 4 m/s2 = 48 kg ´ m/s2 = 48 N

best,
Mr. Gibney