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U1 SCIENTISTS AT WORK
Test Description: SCIENTIFIC METHOD AND INVESTIGATIONS
Instructions: Answer all questions to get your test result.
1) In science, we often gather information with our senses by watching, listening, smelling, and touching. For example, you may record how the color of a flower changes. What is this process called?
A
performing experiments
B
forming conclusions
C
stating hypotheses
D
making observations
2) Imagine that a scientist suggests that the size of an insect population depends on the temperature. What observations must this scientist make in order to collect evidence to support his or her hypothesis?
A
The scientist must observe the insect population throughout the year.
B
The scientist must observe the insect population in different areas.
C
The scientist must observe the insect population in the laboratory.
D
The scientist must observe the insect population only in winter.
3) Scientists always develop a plan when they try to learn something about our natural world. Which sequence correctly shows the steps scientists follow in their plan?
A
make observations → develop an idea → obtain evidence → suggest an explanation
B
obtain evidence → suggest an explanation → develop an idea → make observations
C
develop an idea → suggest an explanation → obtain evidence → make observations
D
suggest an explanation → obtain evidence → make observations → develop an idea
4) Kyle is wondering what he is getting for his birthday. He decides to shake the box that contains his present. Kyle did not realize it, but he was acting like a scientist. What was the first step Kyle took in this situation that a scientist also takes
A
asking a question
B
drawing a conclusion
C
developing an explanation
D
collecting evidence
5) Scientists communicate their results by publishing their work. Why is it important for scientists to do this?
A
to keep their work secret
B
to compete with other scientists
C
so the experiments are not repeated
D
to learn from each other
6) Each measuring tool is designed to measure a specific property of an object or material. Which of these tools can be used to measure the volume of a material?
A
spring scale
B
measuring cup
C
balance
D
thermometer
7) Which of the following is always an important part of an experiment?
A
making a working model
B
identifying and controlling variables
C
observing things in nature
D
making drawings of things observed
8) A science class went on a field trip to study the organisms that live in a stream near the school. Which of these tools would be most useful for making observations about the animals living in the stream?
A
a net
B
a graduated cylinder
C
a telescope
D
a scale
9) Which of these is the metric unit for measuring mass?
A
liter
B
pound
C
kilogram
D
millimeter
10) Which of the following is not a scientific investigation?
A
performing a controlled experiment
B
using a model to test a hypothesis
C
observing how five caterpillars change into butterflies
D
writing a letter about why it's important to protect plants and animals
11) Which of the following would be best done using repeated observation rather than an experiment?
A
Determine the average number of times during a week in May that a group of bees visits flowers.
B
Determine whether a diet that includes honey every day will reduce allergies.
C
Determine which type of flower gives out the strongest scent
D
Determine whether a bee hive is stronger than a wasp nest.
12) Aaron inferred that a train was approaching rapidly based on the way the noise from the train sounded. Which other skill is Sanjay using?
A
communicating results
B
classifying
C
planning an investigation
D
using time/space relationships
13) Scientists usually write reports about their investigations. Why do they do this?
A
to classify results
B
to ask questions
C
to communicate their work to other scientists
D
to perform experimental trials
14) Which statement demonstrates the most scientific observation?
A
The water is changing.
B
The flame is causing a change.
C
Steam forms when water gets hot.
D
Bubbles are forming and rising.
*select an answer for all questions
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