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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
making observations
B
stating hypotheses
C
performing experiments
D
forming conclusions
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 the laboratory.
C
The scientist must observe the insect population only in winter.
D
The scientist must observe the insect population in different areas.
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
suggest an explanation → obtain evidence → make observations → develop an idea
B
make observations → develop an idea → obtain evidence → suggest an explanation
C
develop an idea → suggest an explanation → obtain evidence → make observations
D
obtain evidence → suggest an explanation → develop an idea → make observations
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
collecting evidence
B
developing an explanation
C
drawing a conclusion
D
asking a question
5) Scientists communicate their results by publishing their work. Why is it important for scientists to do this?
A
so the experiments are not repeated
B
to compete with other scientists
C
to learn from each other
D
to keep their work secret
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
thermometer
B
balance
C
measuring cup
D
spring scale
7) Which of the following is always an important part of an experiment?
A
identifying and controlling variables
B
making a working model
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 scale
B
a net
C
a telescope
D
a graduated cylinder
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
observing how five caterpillars change into butterflies
B
writing a letter about why it's important to protect plants and animals
C
using a model to test a hypothesis
D
performing a controlled experiment
11) Which of the following would be best done using repeated observation rather than an experiment?
A
Determine which type of flower gives out the strongest scent
B
Determine whether a diet that includes honey every day will reduce allergies.
C
Determine the average number of times during a week in May that a group of bees visits flowers.
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
using time/space relationships
B
planning an investigation
C
classifying
D
communicating results
13) Scientists usually write reports about their investigations. Why do they do this?
A
to ask questions
B
to perform experimental trials
C
to classify results
D
to communicate their work to other scientists
14) Which statement demonstrates the most scientific observation?
A
The flame is causing a change.
B
The water is changing.
C
Bubbles are forming and rising.
D
Steam forms when water gets hot.
*select an answer for all questions
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