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Dec 2020 semester review part B Flashcards | StudBud
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Dec 2020 semester review part B
Dec 2020 semester review part B
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Questions
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Answers
1
Which is an example of electrical energy being transformed into thermal energy?
a top spinning in a circle
a spring being flattened inside a pen
a curling iron plugged into an outlet
a log burning in a fireplace
2
Which label shows the amplitude?
4
2
1
3
3
Which is a possible risk of chlorofluorocarbons?
ozone depletion
asthma
lead poisoning
acid rain
4
"Ferris Wheel" At which position does a rider have the greatest potential energy?
2
3
4
1
5
What is the geologic time scale based on?
the study of ecosystems
the study of Earth processes
the study of rock layers
the study of tectonic plates
6
Which best describes kinetic energy?
the energy generated when an object is positioned above the ground
the energy stored in chemical bonds
the energy that is released when matter is burned
the energy caused by an object's motion
7
"Bouncing Ball" According to the law of conservation of energy, what happens as the ball moves from point #2 to point 4
The total amount of energy is lost as heat.
The total amount of energy increases.
The total amount of energy remains the same.
The total amount of energy decreases.
8
How are ice ages believed to have caused mass extinctions?
by turning all liquid water into ice
by destroying Earth's atmosphere
by making Earth uninhabitable
by causing Earth's oceans to shrink
9
"Sequence of Geologic Events #2" Which event occurred second?
Event H
Event I
Event J
Event K
10
When the bells ring, the vibrate to create waves. Where do they travel
away from the clock
counterclockwise around the clock
toward the clock
clockwise around the clock
11
below a ball falling off of a wall. At which point does the ball have the least kinetic energy?
1
2
3
4
12
Which is a possible risk of disposing hazardous waste along with regular garbage?
formation of radioactive isotopes
depletion of the ozone layer
nfiltration of toxins into groundwater
creation of algal blooms in the oceans
13
At which position does a rider have the least potential energy?
3
1
4
2
14
Which kind of energy transformation does the picture below indicate?
Iron plugged in,mechanical energy will be transformed into chemical energy.
Iron plugged in,electrical energy will be transformed into chemical energy.
Iron plugged in, electrical energy will be transformed into thermal energy.
Iron plugged in, mechanical energy will be transformed into thermal energy.
15
"Bouncing Ball" At which point does the ball have the greatest kinetic energy?
4
2
3
1
16
"Bouncing Ball" At which point does the system have the greatest potential energy?
4
2
3
1
17
Which of the following provides the best evidence that Earth's continents were once connected?
the discovery of rocks containing similar minerals on all continents
the discovery of fossils of single-celled organisms on all continents
the presence of similar and identical fossils on separate continents
the presence of volcanoes and mountains on different continents
18
Which of the following is evidence of a chemical reaction?
the appearance of water droplets on a glass of iced tea
the disappearance of a liquid as it evaporates in warm temperatures
the disappearance of a solid after it dissolves in a liqui
the appearance of gas bubbles when two substances are mixed
19
Which best describes potential energy?
energy caused by a moving object
energy carried through a medium by mechanical waves
energy stored by an object's positioning or the positioning of its parts
energy released during a chemical reaction
20
Shark and fish fossils have been found in many desert areas. What is the best explanation of this discovery?
The desert areas will eventually change from dry land to oceans.
The desert areas were once covered with water.
The sharks and fish are closely related to one another.
The sharks and fish were brought to the area by large animals.
21
An arrow is pulled back on a bow, and then released, what happens to total amount of energy when the arrow is released?
Its decreased
It remains the same
It increased
It is lost to the surroundings
22
Which process is responsible for Earth's temperature increasing during the day?
convection
electromagnetism
conduction
radiation
23
The top picture shows rock layers for an area looked like before a set of events. What happened first?
Event K
Event H
Event J
Event I
24
The image below shows ripples in a pond. A boy dropped two pebbles into the pond to create the ripples.
4
2
3
1
