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Pennfoster ELective Courses Exam: 986866RR - GENERAL SCIENCE,

Resolved Question:

Pennfoster ELective Courses

Exam: 986866RR - GENERAL SCIENCE, EXAM 2

1. _______ is an example of a fossil fuel.
A. Coke
B. Petroleum
C. Charcoal
D. Wood

2. Which one of the following processes will cause a magnet to lose its magnetism?
A. Heating the magnet
B. Turning the magnet upside down
C. Placing it near a magnetized bar
D. Rubbing the magnet against another magnet

3. When there's an electric current in a wire,
A. the wire becomes brittle.
B. a magnetic field exists around the wire.
C. a lamp is lighted.
D. the insulation is burned off.

4. The _______ of the reaction in a nuclear reactor must be controlled so that it may produce heat rather
than a violent explosion.
A. weight
B. speed
C. disposal
D. fuels

5. The type of filing that's most often used to demonstrate the lines of magnetic force around a magnet is
A. iron.
B. copper.
C. lead.
D. aluminum.

6. Lemon juice is an example of a/an
A. acid.
B. base.
C. bicarbonate.
D. neutral.

7. During water distillation, water must leave a container, such as a flask, and pass through a tube as a/an
_______ before it's condensed in the condenser.
A. solid
B. liquid
C. ice
D. gas

8. At what temperature does water boil?
A. 0°C
B. 32°C
C. 100°F
D. 212°F

9. Heat passes through liquids by the process of
A. convection.
B. conduction.
C. absorption.
D. radiation.

10. The chief reason for chlorinating water is to
A. soften the water.
B. protect the teeth.
C. remove unpleasant tastes.
D. destroy harmful bacteria.

11. An electric motor turns because the electricity passing through its coils produces
A. magnetism.
B. a chemical change in the coils.
C. heat.
D. sound.

12. What part of the human eye permits light rays to enter?
A. Pupil
B. Iris
C. Cornea
D. Muscles

13. A compass is actually a
A. stationary magnet.
B. piece of unmagnetized steel.
C. piece of metal with a static charge.
D. small magnet on a pivot.

14. Rapid oxidation gives off
A. little heat and no light.
B. much heat and much light.
C. little heat and much light.
D. no heat and no light.

15. Water is an example of a/an
A. element.
B. mixture.
C. solution.
D. compound.

16. The formula for water is
A. H2O.
B. HO2.
C. 2HO.
D. H2O.

17. Water (H2O) has what form of chemical bonds?
A. Ionic
B. Organic
C. Covalent
D. Industrial

18. The simplest type of matter is a/an
A. molecule.
B. compound.
C. atom.
D. element.

19. Which one of the following elements is not necessary to start a fire?
A. Light
B. Oxygen
C. Heat
D. Combustible material

20. Cutting a bar magnet in two pieces produces
A. an electrical current.
B. two unmagnetized bars.
C. two magnets.
D. a magnetic compass.
Exam: 986867RR - GENERAL SCIENCE, EXAM 3
1. The natural process by which rocks are crushed and moved is called
A. stratification.
B. condensation.
C. evaporation.
D. erosion.
2. One common use for a pulley is
A. sharpening a pencil.
B. switching on lights.
C. opening a tin can.
D. raising a flag to the top of a flagpole.
3. The light-year is used to measure
A. time.
B. velocity.
C. distance.
D. brightness of light.
4. Vibrating objects usually produce
A. electrical waves.
B. light waves.
C. heat waves.
D. sound waves.
5. A vibrating string produces the highest pitch if it's
A. loose and long.
B. tight and short.
C. tight and long.
D. loose and short.
6. _______ have been placed in orbit to improve weather forecasts, communication, astronomy, and
navigation.
A. Rockets
B. Astronauts
C. Meteors
D. Satellites
7. When swimming under water, pressure becomes greater
A. as you near the surface.
B. when the water is rough.
C. as you go deeper.
D. when the water is smooth.
8. Weather is determined by the movement of
A. the sun.
B. air masses.
C. clouds.
D. the moon.
9. Water that's on the side of the earth facing the moon will
A. retreat.
B. rise.
C. fall.
D. stay at the same level.
10. On a weather map, an area marked "high" indicates high
A. relative humidity.
B. wind speed.
C. air pressure.
D. temperature.
11. In miles, the average distance from the earth to the sun is
A. 93,000,000.
B. 240,000.
C. 8,000.
D. 186,000.
12. Which one of the following factors does not cause erosion?
A. Rock
B. Glaciers
C. Wind
D. Water
13. The imaginary line around the earth, which is used in locating east-west distances, is the
A. international date line.
B. equator.
C. axis.
D. prime meridian.
14. The revolving of the earth and the tilt of the earth's axis work together to produce
A. solar eclipses.
B. the four seasons.
C. high and low tides.
D. night and day.
15. To reduce the total effect of friction, sliding friction can be converted into _______ friction.
A. generating
B. rolling
C. bearing
D. heating
16. A jet plane operates on the same principle as the
A. vacuum cleaner.
B. generator.
C. rotary lawn sprinkler.
D. eggbeater.
17. How long does it take the earth to make one complete revolution about the sun?
A. 3651/4 days
B. 241/4 hours
C. 24 hours
D. 365 days
18. The part of the atmosphere closest to the earth is called the
A. troposphere.
B. st
Submitted: 2 years ago.
Category: Homework
Expert:  Cher replied 2 years ago.

Cher :

Hello, and welcome back to Just Answer.

Cher :

I may be able to help you with these exams, but site rules are such, that you can only post one exam per question.

Cher :

By when do you need these completed?

Cher :

Thanks for your additional information,

Cher :

Cher

Cher :

Also, please tell me the titles of these exams. Thanks.

Expert:  Cher replied 2 years ago.
Our chat has ended, but you can still continue to ask me questions here until you are satisfied with your answer. Come back to this page to view our conversation and any other new information.

What happens now?

If you haven’t already done so, please rate your answer above. Or, you can reply to me using the box below.
Customer: replied 2 years ago.
I need these answers in 3-4 days. These r pennfoster High school Elective courses General science part 2 and 3...
Expert:  Cher replied 2 years ago.
Hello again, sheraz.

I can have these for you by your deadline, but can you please post the second exam in a NEW separate question in Homework, to my attention--begin the question with 'For Cher'.

Thanks,
Cher
Expert:  Cher replied 2 years ago.
Hello again, sheraz.

Please click HERE to download my answers for comparison with your own, before submitting.

Please let me know when you have successfully downloaded and saved the file to your computer.

IMPORTANT: If you found my answer helpful, please choose a positive rating like this one Laughing for 'Excellent Service', so I may receive credit for my work. I'm very proud of my 100% positive feedback received from clients like you!

If you have any additional questions, please click 'Reply to Expert' for more information and/or BEFORE rating, and I will be glad to assist you further.

Best regards,
Cher
Cher, Teacher
Category: Homework
Satisfied Customers: 18654
Experience: Teacher, Tutor--35+ yrs. Masters Degree. Senior Internet Researcher
Cher and 10 other Homework Specialists are ready to help you
Customer: replied 2 years ago.
Exam: 986867RR - GENERAL SCIENCE, EXAM 3

I want answers for that exam too. Help.....
Customer: replied 2 years ago.
Pennfoster High School

Exam: 986867RR - GENERAL SCIENCE, EXAM 3



1. The natural process by which rocks are crushed and moved is called
A. stratification.
B. condensation.
C. evaporation.
D. erosion.

2. One common use for a pulley is
A. sharpening a pencil.
B. switching on lights.
C. opening a tin can.
D. raising a flag to the top of a flagpole.

3. The light-year is used to measure
A. time.
B. velocity.
C. distance.
D. brightness of light.

4. Vibrating objects usually produce
A. electrical waves.
B. light waves.
C. heat waves.
D. sound waves.

5. A vibrating string produces the highest pitch if it's
A. loose and long.
B. tight and short.
C. tight and long.
D. loose and short.

6. _______ have been placed in orbit to improve weather forecasts, communication, astronomy, and
navigation.
A. Rockets
B. Astronauts
C. Meteors
D. Satellites

7. When swimming under water, pressure becomes greater
A. as you near the surface.
B. when the water is rough.
C. as you go deeper.
D. when the water is smooth.

8. Weather is determined by the movement of
A. the sun.
B. air masses.
C. clouds.
D. the moon.

9. Water that's on the side of the earth facing the moon will
A. retreat.
B. rise.
C. fall.
D. stay at the same level.

10. On a weather map, an area marked "high" indicates high
A. relative humidity.
B. wind speed.
C. air pressure.
D. temperature.

11. In miles, the average distance from the earth to the sun is
A. 93,000,000.
B. 240,000.
C. 8,000.
D. 186,000.

12. Which one of the following factors does not cause erosion?
A. Rock
B. Glaciers
C. Wind
D. Water

13. The imaginary line around the earth, which is used in locating east-west distances, is the
A. international date line.
B. equator.
C. axis.
D. prime meridian.

14. The revolving of the earth and the tilt of the earth's axis work together to produce
A. solar eclipses.
B. the four seasons.
C. high and low tides.
D. night and day.

15. To reduce the total effect of friction, sliding friction can be converted into _______ friction.
A. generating
B. rolling
C. bearing
D. heating

16. A jet plane operates on the same principle as the
A. vacuum cleaner.
B. generator.
C. rotary lawn sprinkler.
D. eggbeater.

17. How long does it take the earth to make one complete revolution about the sun?
A. 3651/4 days
B. 241/4 hours
C. 24 hours
D. 365 days

18. The part of the atmosphere closest to the earth is called the
A. troposphere.
B. stratosphere.
C. ionosphere.
D. thermosphere.

19. Which one of the following factors is the main source of the earth's heat?
A. Pressure
B. Sun
C. Season
D. Altitude

20. Which part of the atmosphere is nearest the earth?
A. Troposphere
B. Ozone layer
C. Stratosphere
D. Ionosphere
Expert:  Cher replied 2 years ago.
Hello again, sheraz.

Have you successfully downloaded the answers to the first exam I provided answers for?

If so, please rate it with a happy smiley face for Excellent Service and I will send you the answers to the next exam, shortly. Thanks!

Question numbers 18 and 20 are the same, but phrased differently, in the above exam.

Best regards,
Cher
Expert:  Cher replied 2 years ago.
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