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Modern Inventions
Test Description: From the book God's Design for the Physical World. Unit 4 Modern Conveniences.
Instructions: Answer all questions to get your test result.
1) Who invented the incandescent light bulb?
A
James Edison
B
James Watt
C
Thomas Watt
D
Thomas Edison
2) What are three types of lightbulbs
A
Incandescent
B
Halogen, Flourescent
C
All of the above
D
LED
3) In a washing machine this force helps remove water from clothes:
A
Centripetal force
B
Tensile strength
C
net force
D
boyancy
4) This must be removed from a light bulb to prevent burning of the filament:
A
Hydrogen
B
Helium
C
Oxygen
D
Carbon Dioxide
5) Modern Appliances are designed to save
A
Time and Effort
B
Money and Effort
C
none of the above
D
Time and Money
6) Accurate clocks were needed for:
A
Navigation
B
Planes
C
All of the above
D
Trains
7) Refrigeration if the removal of:
A
food
B
cold
C
bacteria
D
heat
8) Refrigeration requires a substance to change
A
altitude
B
matter
C
density
D
state
9) The main reason refrigerators were invented
A
eat food
B
cook food
C
preserve food
D
make food taste better
10) One of the earliest ways to tell time was:
A
Waterclock
B
Sundail
C
Obelisk
D
all of the above
11) What are some of the problems that had to be solved before a useful sewing machine could be invented?
A
Prepare a short written answer.
B
Think about the needle going through the fabric and where the eye is placed.
12) Explain how a refrigerator works:
A
Prepare a short written answer
B
Step 1: Liquid refrigerant is under pressure
C
Step 3: turned into a gas, repeat
D
Step 2: flows through a valve, lower pressure causes it to expand
13) How does centripetal force work?
A
Prepare a short written answer
B
Remember the experiment we did with the wash cloth.
14) Why is the pendulum an important part of a accurate clock?
A
Prepare a short written answer.
B
Tick- tock
C
Accurate
*select an answer for all questions
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