Scientific Method and Measurement Final Review

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Transcript Scientific Method and Measurement Final Review

Topic: Final Exam Review
Aim: Let’s review Scientific Method and
Do Now: Fill in Measurement Units Chart
HW: Cells and Cell Transport Review Sheet
Volume of a regular solid
Volume of a liquid
mm, cm, m, km
mL or L
Density of a solid
Density of a liquid
0 cm
What is the length of the object in
centimeters? Millimeters?
Mass = 137.4 gm
Mass = 25.4 gm
6cm x 4cm x 3cm =
A student set up the
experiment shown below to
determine if radish seeds take
in oxygen as they
germinate. Methylene blue is
a chemical that is blue when
oxygen is present, but is
colorless when
oxygen is not present.
Containers A and B each
contained 200 mL of water
and 10 drops of methylene
blue. Ten radish seeds were
added to container A.
Container B had no radish
A student examined a rock sample and
described it as having particles of various
colors that were 1 mm to 12 mm in size.
The student was making
(1)an inference
(2) a prediction
(3) a hypothesis
(4) an observation
The purpose of container B in this experiment is to
(1) serve as the control container
(2) serve as the experimental container
(3) show that seeds do not give off oxygen
(4) show that seeds do not give off carbon dioxide
Which statement is an inference?
(1) A thermometer shows that the air temperature
is 56°F.
(2) A mineral sample of galena produced a
gray-black streak when tested.
(3) Based on previous data, ten hurricanes may
occur in the year 2013.
(4) A weather vane indicates the wind is coming
from the west.
All of the liquid from a test tube is poured into a
beaker, as shown in the diagram below.
Compared to the liquid that was in the test tube,
the liquid in the beaker has
(1) a different volume, but the same shape
(2) a different volume and a different shape
(3) the same volume, but a different shape
(4) the same volume and the same shape
The diagram below shows water in a graduated
A student states that the graduated cylinder
contains 150 mL of water. This statement is
(1) a prediction
(3) a theory
(2) an observation
(4) a hypothesis
The diagram below shows 20 grams of two different
materials, A and B, on a laboratory balance.
Compared to material A, material B has a different
(1) density
(3) phase
(2) mass
(4) shape
The diagram below shows a triple-beam balance.
What is the maximum mass, in grams, that could be
measured by this balance?
(1) 110
(3) 610
(2) 500
(4) 1510
The diagram below shows a rock
suspended above an overflow
container filled with water up
to the overflow spout. A
graduated cylinder is positioned
next to the container to collect
water that comes out of an
overflow spout.
Which property of the rock can
be directly determined when the
rock is placed in the overflow
(1) mass
(3) volume
(2) density
(4) hardness
A student wanted to study the amount of mold
growing on pizza at different temperatures. In the
experiment, the student set up four identical pans of
pizza. Each pan contained the same amount of pizza.
The temperatures and light conditions are shown in
the data table below.
One error made in setting up the experiment was that
the four pans of pizza
(1) were at different temperatures
(2) had different ingredients
(3) were different sizes
(4) received different amounts of light
The results of one experiment carried
out by a research team would be
considered valid if
1. the experiment had no control
2. all the members of the research
team came to the same conclusion
3. the experiment had more than one
4. the experiment was repeated and
the same results were obtained
each time
Why do scientists make graphs of data from
1. to observe general trends and patterns in
the data
2. to make the observed data more accurate
3. to prevent errors in measuring data
4. to help change the original data tables
A new idea that is tested in a
scientific experiment is known as a(an)
1. theory
2. hypothesis
3. inference
4. observation
Which statement about the use of independent
variables in controlled experiments is correct?
1. A different independent variable must be used
each time an experiment is repeated.
2. The independent variables must involve time.
3. Only one independent variable is used for each
4. The independent variables state the problem
being tested.
Why do scientists consider any hypothesis valuable?
1. A hypothesis requires no further investigation.
2. A hypothesis may lead to further investigation
even if it is disproved by the experiment.
3. A hypothesis requires no further investigation if it
is proved by the experiment.
4. A hypothesis can be used to explain a conclusion
even if it is disproved by the experiment.