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Scientists At Work
Test Description: Big Idea 1: The Practice os Science Big Idea 2: The Characteristics of Scientific Knowledge
Instructions: Answer all questions to get your test result.
1) An Investigation in which all conditions are controlled
A
Variable
B
Experiment
C
Control
D
Balance
2) Jane wants to measure the mass of a rock. The tool she should use is an
A
Experiment
B
Balance
C
Control
D
Variable
3) Any condition in an experiment that can be changed is an
A
Experiment
B
Balance
C
Control
D
Variable
4) The setup to which you compare all the others in an experiment is the
A
Control
B
Experiment
C
Variable
D
Balance
5) The information that scientists collect as they investigate the natural world is
A
Evidence
B
Opinion
C
Microscopic
D
Spring scale
6) Objects that are too small to see with your eyes alone are
A
Spring scale
B
Microscopic
C
Evidence
D
Opinion
7) Jaime wants to find out how much force it takes to pull a toy car up a ramp. The tool he should use is
A
Spring scale
B
Opinion
C
Evidence
D
Microscopic
8) A belief or judgement that is not supported by investigation is an
A
Evidence
B
Spring scale
C
Microscopic
D
Opinion
9) Josh has been growing plant that received 1/2 cup of water two times per week. Now he wants to see what happens when the amount of water is reduced. which plant is the control ?
A
Plant 4 - no water
B
Plant 3 - 1/2 cup once every two weeks
C
Plant 2 - 1/2 cup once per week
D
Plant 1 - 1/2 cup two times per week
10) Observations are made using the five senses. We can use observations to draw conclusions. Which of the following is a conclusion? a. the object is flat b. the flower smells like mint c. Cricket chirp to attract mates d. the food tastes salty
A
The object is flat
B
The food tastes salty
C
Cricket chirp to attract mates
D
The flower smells like mint
11) Samara observes and sketches the phases of the moon during a five -week period . her drawings are shown here.
A
It involves experimentation
B
it involves both experimentation and repeated observations
C
It involves repeated observations
D
It involves modeling
12) Sometimes the results of an investigation are not what were expected. When this happens what should a scientist do
A
Plan another investigation to test the results of the first one
B
Ignore the first set of results and plan a different investigation
C
Defend the results as correct
D
Change the results
13) Why do scientists repeat their experiments
A
To avoid making observations
B
To throw out the information they collected earlier
C
To make sure that the information they collect is reliable
D
To develop a new procedure that they can use later
14) Different systems for making measurements use different units. Which system os measurement is generally used by scientist?
A
Customary
B
Imperial
C
English
D
Metric
15) Scientists want to determine if walls that are painted a certain color will raise a person's blood pressure. They plan to set up four rooms. Which variable should change in each room?
A
The color used
B
The type of room used
C
The instruments used to test the blood pressure
D
The amount of time the person spends in the room
16) Michael rides a bike made by Company A. Luis rides a bike made by Company B. How can Michael and Luis determine in a scientific way whose bike has tires that last longer?
A
Have each student ride their own bike for 25 days, then compare the tires.
B
Ask ten classmates who ride each bike which tires last longer
C
Use a machine to test the bikes in the same way for 25 days, the compare the tires
D
Read information about the tires from each manufacturer
17) A teacher writes the following note on a student's experimental design; You did not identify and control variables. Why is it important to identify and control variables?
A
because a scientist must know which variable causes change
B
because a scientist must observe data
C
because a scientist must form a hypothesis
D
because a scientist must know which variable to use for making a model
18) Scientists include controls in their experiments. Why is a control important?
A
It helps scientist share results
B
It helps scientist form their first hypothesis
C
It helps scientist record their repeated observations
D
It helps scientist compare their results to a standard
19) A doctor says that drinking two glasses of milk in the morning will give students more energy. Which of the following would be good scientific evidence for or against the doctor's claim.
A
a brochure from the doctor stating the benefits of milk
B
statements from five people about how drinking milk in the morning gives them energy
C
a TV advertisement that drinking milk in the morning gives people plenty of energy
D
data from scientific investigation about drinking milk in the morning
20) When Andrew conducts an investigation, he repeats the investigation several times. Why does Andrew do this?
A
to do the work very safely
B
to create inventions
C
to be sure the work is correct
D
to get consistent results
*select an answer for all questions
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