Weekly Warm-Ups
August 17-21
Journal: August 17,2015
Answer the following questions. Explain your response.
1.
In an experiment to determine if planaria( freshwater flatworms) are
more active in warm water or cold water, which of these would be varied
by the experimenter?
a.
b.
c.
d.
2.
The volume of the water used
The number of planaria
The size of the observation container
The temperature of the water
Sets of 25 green plants and 25 mushrooms were put in cool, dark room
for 2 weeks. Each set was watered daily with 50mL of a 0.01% fertilizer
solution. Which statement best explains why the green plants died and
the mushroom survived?
a.
b.
c.
d.
Green plants need more water than mushrooms do.
Mushrooms can make their own food in cold temperatures
Green plants need light to carry out photosynthesis
Mushrooms use fertilizer more efficiently than green plants do.
Tuesday, August 18,2015
Answer the following questions. Provide an explanation..
A science class has been observing the
population growth of a bacteria species
for 18 days. Food was added to the test
tube in which the bacteria were grown.
The data is shown in the graph.
1. What is the maximum number of
paramecium of the test-tube
environment that can be sustained as
long as food is added?
A about 10 paramecia
B about 50 paramecia
C about 65 paramecia
D about 100 paramecia
2. On what day does the colony stabilize?
3. What type of data is being used?
Quantitative or Qualitative
Do Now:
Define the following terms using your text.. Requires
teacher signature upon completion.
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Scientific Method
Hypothesis
Controlled Experiment
Data----(leave space..I will provide)
Observations
Dependent Variable (responding variable)
Independent variable (manipulated variable)
Constant (Control) ---(leave space..I will provide)
Experimental group ---(leave space..I will provide)
Control group ---(leave space..I will provide)
Scientific Theory
Wednesday, August 19, 2015
Journal: Answer the following questions. Explain your
response.
1. The
result of a scientific experiment is PROBABLY valid if -
A most people believe the result is correct.
B repetitions give consistent data.
C it is based on a hypothesis.
D it is done by a world-famous scientist.
2. During a laboratory exercise, a student bumped the table
where chemicals were being held. The storage containers
tumbled over, and the different liquids spilled onto the
table. What is the FIRST thing that other students should
immediately do?
A Wipe up the liquid with paper towels.
B Set the containers upright.
C Dilute the spill with water.
D Tell the teacher what has happened.
Thursday, August 20, 2015
Answer the following questions. Explain your response.
1. A planarian is a flat worm that has a simple
nervous system, muscles, and digestive
system that extends throughout the body.
The picture shows a set of experiments done
on planarians. Which of the following
conclusions is BEST supported by the results
of these experiments?
A Planarians reproduce by sexually.
B Cells in planarians help them to regenerate.
C The nervous system of planarians enables them
to grow new cells.
D Muscle cells are required for the growth of
planarians.
2. What were the scientist trying to identify?
3. Can you identify variables?
Friday: August 21, 2015
Free Write Friday