PES Skill Sheets.book - Capital High School

Skill Sheet 17.4: Electrical Power
1. Answers are:
a. 5 kW
b. 10 kWh
c. $1.50
2. Answers are:
a. 300 minutes
b. 5 hours
c. 1.2 kW
d. 6 kW
e. $0.90
3. 960 W
4. 24 W
5. Answers are:
a. 60 W
b. 0.06 kW
c. 525.6 kWh
d. $78.84
6. 0.625 A
7. Answers are:
a. 3 V
b. 1 A
c. 3 W
Skill Sheet 18.1: Andrew Douglass
1. Douglass originally started as an astronomer. He helped to
set-up observatories and also studied Mars with Percival
Lowell. He noticed a possible relationship between sunspot
cycles and the climate and wished to study this further. He
noted that tree rings held information about weather patterns
and hoped he could find a link between periods of drought
and sunspot activity. This marked his move away from
astronomy and toward tree ring analysis.
2. Douglass created the science of dendrochronology or tree ring
dating. He specifically developed cross-dating as a technique
to match tree ring samples with ancient ruins.
3. Douglass, in 1929, was able to date with accuracy Native
American ruins in Arizona. He studied pine tree rings dating
back to the time of Native American dwellings. He matched
wooden beam samples against pine tree rings to determine a
Skill Sheet 18.2: Relative Dating
1. A thunderstorm began. A child ran through a mud puddle
leaving footprints. Hail began to fall. Finally, the mud puddle
dried and cracked.
2. One April afternoon, a thunderstorm began. A child was
outside playing. When the rain began to fall hard, the child
ran home. Her footprints were left in a mud puddle.
Fortunately, she made it home just in time because small
hailstones suddenly began to fall. The hailstorm lasted for a
few minutes and then the clouds cleared. The next morning
was bright and sunny. The mud puddle dried and then cracked
in many places.
3. C
4. E (This is the term that will be new to students.)
5. A
6. F
7. B
8. D
9. There is no matching picture for this concept. The name of
this concept is faunal succession.
Page 42 of 57
8. Answers are:
a. 24 ohms
b. 600 W
c. 0.6 kW
9. Answers are:
a. 20.5 A
b. 10.8 ohms
c. 18 kWh
d. $140.40
10. Answers are:
a. 6 ohms
b. 2 A
c. 12 W
d. 24 W
11. Answers are:
a. 12 V
b. 4 A
c. 48 W
d. 8 A
e. 96 W
precise date for the ancient ruins. This cross-dating technique
provided a tool for all archaeologists to date prehistoric
remains and ruins.
4. The second asteroid is called Minor Planet or Asteroid
(15420) Aedouglass.
5. The Boyden Observatory is now located in Bloemfontein,
South Africa.
6. The Spacewatch Project is located at the University of
Arizona’s Lunar and Planetary Laboratory. Scientists at
Spacewatch study and explore small objects in the solar
system including asteroids and comets. The Project was
founded by Professor Tom Gehrels and Dr. Robert S.
McMillan in 1980.
10. The rock bodies formed in this order: H, G, F, D, C, B, E, and A.
11. The fault formed after layer F and before both layer D and the
intrusion.
12. The stream formed after layer A. Like an intrusion, the stream
cut across the rock bodies.
Extension
13. The set of clues
includes three layers
of colored sand in a
clear tank. The layers
were made while a
small pencil was held
upright. The sand
filled in around the
pencil. After the layers
were created, a
second, longer pencil
was pushed through
the layers.