Unit 1 Powerpoint review game

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Jeopardy Feud
Unit 1
September 24, 2014
1
• When you hear the word scientist, you may imagine a
person in a white coat working in a laboratory.
However, anyone, including you, can think like a
scientist. What would a person who is thinking like a
scientist do?
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A. asking testable questions
B. talking with friends
C. form opinions about science
D. take a chemistry class in school
A. Asking a testable question
22
• Science research works to create theories and laws, not
facts and truths. Why is the conclusion reached via
valid scientific inquiry not considered to be a hard fact?
• A. It is impossible to know all of the details used to reach
the conclusion.
• B. Science requires that all conclusions must be examined
from all vantage points.
• C. New information and data may eventually become
available.
• D. It is impossible to examine all available data fully.
C. New information and data may eventually become
available
3
• At one time, scientists proposed a principle called the
central dogma. This principle stated that in the body, a
chemical substance called DNA contains information. This
information passes from DNA to RNA, but not from RNA
to DNA. Then in 1970, scientists proved that some types of
RNA can transfer information to DNA. What can you
conclude from this information?
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A. Scientists have made many life-saving discoveries.
B. Scientists work together to advance scientific knowledge.
C. Scientists often respond to what they see as needs in society.
D. Scientists may find new information that causes them to
modify their ideas.
D Scientists may find new information
that causes them to modify their ideas
18
• A good experiment has several characteristics. Which
characteristic is part of a good scientific experiment?
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A. Results can be reproduced.
B. Results are not reviewed by peers.
C. Results are based on a small sample size.
D. Results are based on an undisclosed process or
procedure
A. Results can be reproduced
26
• Is it a law or a theory?
Rock layers found deeper are older than shallower layers
Law
4
• Scientists do many types of work. Their work often includes
making field observations, conducting surveys, creating
models, and carrying out experiments. Which description
characterizes an experiment?
• A. observation of plants or animals in their natural
environment
• B. physical or mathematical representation of an object or
process
• C. an organized procedure to study something under controlled
conditions
• D. collection of data from the unregulated world for
comparative purposes
C. an organized procedure to study
something under controlled conditions
24
• Smitty drops a rock from a set height and measures the
time it takes the rock to reach the ground. He uses this
time and the distance of the fall to calculate the
average speed of the rock. He tests four rocks of
B. How does mass
different masses. Which question is Smitty
affect the speed of a
investigating?
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falling object?
A. What causes an object to accelerate?
B. How does mass affect the speed of a falling object?
C. How does mass affect the force exerted by an object?
D. How does the free-fall height affect the speed of a
falling object?
5
• Gemma wants to investigate the rain
forest ecosystem of the Amazon
jungle in South America. To conduct
the experiment, Gemma uses plants,
reptiles, and insects native to New
Jersey, where she lives, to build a
terrarium such as the one shown in
the following figure Which limitation
is true of Gemma’s experiment?
• A. It does not model the interaction
of certain insects and plants.
• B. It does not model the interaction
of certain reptiles and plants.
• C. It does not model the interaction
of certain reptiles and insects.
• D. It does not model the exact
conditions of nature in the Amazon
D. It does not model the
exact conditions of nature in
the Amazon
27 DOUBLE POINTS
• You must get all answers correct to earn all the points
You want to test which size of soccer (football) ball is easiest
to juggle with your feet. You test a size 3, size 4 and a size 5
ball. You count the seconds the ball stays in the air for each of
the trial. You allow your self to use both of your feet, knees
and head to juggle the ball.
• What is the independent variable, dependent variable and
standardizing variable?
IV: Different size balls
DV: Seconds ball stays in the air
SV: Using all soccer balls
6
• Raul wants to investigate how the angle of a ramp affects
the speed of an object rolling down the ramp. He can
conduct his investigation in a number of different ways.
Which investigation should he perform?
• A. observe different bicyclists riding down hills of varying
steepness
• B. record the time it takes one bicyclist to ride down hills of
varying steepness
• C. perform an experiment in a lab in which the angle of the
ramp is controlled and the speed of a rolling cart is measured
• D. observe video of various objects rolling down hills and
estimate the angle of the hill and the speed of the object
C. perform an experiment in a lab in which the angle of the ramp is controlled
and the speed of a rolling cart is measured
7
• In 1989, two university research scientists reported that
they had produced a nuclear reaction during a simple
tabletop experiment. Other scientists, however, were
unable to reproduce the results of the original
experiment. What characteristic of a good scientific
investigation is missing from the original results?
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A. The results were made public.
B. The research was conducted at a university.
C. The results of the experiment were not reproducible.
D. The experiment did not include sophisticated
equipment.
C. The results of the experiment were not reproducible.
9
• The table shows how the theory of atoms has changed over time
What do these changes show about the current theory of the
atom?
• A. It is good because it adapts to include new information.
• B. It is good because it is from a reliable source.
• C. It is bad because it is likely to change again.
• D. It is bad because it does not match the original theory of the
atom.
A. It is good because it adapts to include new information
19
• Anton is a geologist. He wants to get the best possible
information about lava flows from eruptions that are
happening at some specific locations around the world.
He wants to be able to vary what he studies based on
his initial findings. Which type of investigation should
Anton conduct?
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A. a survey
B. fieldwork
C. library research
D. a laboratory investigation
B. fieldwork
10
• Which of the following statements about scientific
laws and theories is correct?
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A. A law explains; a theory predicts.
B. A law describes; a theory explains.
C. A law predicts; a theory guesses.
D. A law is fact; a theory is a guess
B. A law describes; a theory explains
20
• Two students conduct the same experiment, but they
get different results. What should the students do next?
• A. The students should check their procedure and tools
for sources of error.
• B. Both students should throw out their data and start
over.
• C. The students should compare data with other students
and then use the data from the student who was closest to
the rest of the class.
• D. The students should find the average of each data set
and each report the average data.
A. The students should check their procedure and tools for sources
of error.
28 Double points
The graph represents the results of an
investigation of the growth of three identical
bacterial cultures incubated at different
temperatures. Which inference can be made
from this graph?
A. Temperature is unrelated to the
reproductive rate of bacteria.
D. Refrigeration will
most likely slow the
growth of these
bacteria.
B. Bacteria cannot grow at a temperature of
5°Celsius.
C. Life activities in bacteria slow down at
high temperatures.
D. Refrigeration will most likely slow the
growth of these bacteria.
2
• A television station in Miami reported that a jury had
reached a verdict. How did the people on this jury act
like scientists when they reached their verdict?
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A. by asking questions
B. by drawing a conclusion
C. by talking with each other
D. by performing their civic duty
B. By drawing a conclusion
17
• Although they may not realize it,
many people need scientific
knowledge for their careers. An
example is shown in the following
illustration. How is this person
using scientific knowledge?
D. by using the metric system
when measuring
• A. by planning ahead
• B. by using the proper tools
• C. by taking the time to avoid
mistakes
• D. by using the metric system
when measuring
25
• Is it a law or a theory?
“As galaxies move farther apart from each other,
they move faster. A galaxy’s speed is proportional to its
distance.”
Theory
12
• A student predicted that black paper will get warmer in
sunlight than a piece of white paper. He performed an
experiment to test his prediction four times. The black paper
was warmer three times, and the white paper was warmer
once. What might have caused the RESULTS to be
DIFFERENT?
• A. A thermometer measures temperature differently on white
paper and on black paper.
• B. Variables other than the color of paper might have not been
constant.
• C. Results just differ from trial to trial and do not hve to be the
same.
• D. The color of the paper does not affect the temperature of the
paper.
B. Variables other than the color of paper might have
not been constant.
23
• Evie was researching the question “what type of
animals live in a wetland?” Which report would
provide the most accurate answer to her question?
• A. "Water Quality in Wetlands," published by the
United States Geological Survey
• B. "Endangered Species in Our Wetlands," by a reporter
for the Daily Globe Newspaper
• C. "Birds of Wetlands," in Science, the Journal for the
American Association for the Advancement of Science
• D. "Organisms in Wetlands," a report on the internet by
the Chesapeake Bay Foundation
D. "Organisms in Wetlands," a report on the internet by
the Chesapeake Bay Foundation
8
16
• The procedure and data table for an experiment are shown here.
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Step 1: Add approximately 25 mL of water to a 50-mL graduated cylinder.
Step 2: Measure and record the initial volume of the water to the nearest 0.1 mL.
Step 3: Carefully slide the object into the graduated cylinder. Measure and record
the final volume of the water to the nearest 0.1 mL.
• Step 4: Determine the volume of the object by subtracting the measurements in
steps 2 and 3. After making several of these measurements, the students analyzed
the data.
What pattern in the data could be used to predict the final volume if the initial
volume is known?
• A. The final volume is the sum of the initial volume and the volume of the object.
• B. The initial volume is the sum of the final volume and the volume of the object.
• C. The volume of the object is the sum of the initial volume and the final volume.
• D. The final volume is the difference between the initial volume and the volume
of the object.
A. The final volume is the sum of the initial volume and the volume of the
object
11
• When conducting a good experiment, which of the
following is least important?
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A. Creating a clear hypothesis
B. Choosing a topic that has never been examined
C. Making accurate observations
D. Making sure all of the non-variable factors are
constant
B. Choosing a topic that has never been
examined
13
• Which source should a scientific researcher reject
because of unreliability?
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A. textbook
B. government brochure
C. webpage of a university professor
D. advertisement promoting a product
D. advertisement promoting a product
15
• This diagram shows one type of
model of the brain. Which item
represents another type of brain
model?
D. a three-dimensional brain
x-ray
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A. a copy of the human skull
B. the results of a lie detector test
C. the results of an intelligence test
D. a three-dimensional brain x-ray
21
• In an experiment, the data collected is a measurement
of what?
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A.
B.
C.
D.
Constant conditions
Independent variable
Dependent variable
Conclusion
C. Dependent variable
14
• Scientists need to know how gravity acts on a space
shuttle so they can put the space shuttle into orbit.
They use an equation that describes how gravity relates
to the mass of two objects and the distance between
the two objects. Which term describes this equation?
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A. a scientific law
B. an observation
C. a model
D. a scientific theory
A. a scientific law
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