Which statement is a scientific claim?

Observations of constellations show that stars have moved over time.

Why is publishing results important in science?

It allows others to evaluate the results.

Smita is testing how a paper airplane's shape affects the distance it flies. Which action shows her logical reasoning?

She decides to use the same type of paper for each airplane.

Samantha is investigating the densities of several liquids. Which action is the result of her creative thinking?

She decides to compare the densities of liquids commonly added to foods.

Which statement is a hypothesis?

If a worm is given a choice, it will move toward dark rather than light.

Which two statements are scientific claims?

Images of Mars show that it once had liquid water flowing on its surface., The polar ice caps of Mars consist mainly of carbon dioxide ice.

Which sentence describes a limitation of this model of the solar system?

It does not show the real distances between the planets.

Which problem does this model of the solar system solve?

The real-life solar system is too large to fit in a laboratory.

If a scientist gets unexpected results during the first trial of an experiment, what should he or she do next?

Repeat the experiment to be sure the results are valid.

Which two statements describe a claim that is based on science?

It is based on empirical evidence., It is based on logical reasoning.

If the results of an experiment do not support a scientist's hypothesis, what should the scientist do next?

Revise it based on the results and use it to design another experiment.

Which statement is a hypothesis these students might be using in their experiment?

If a car rolls down..., then it will be fastest on the steepest

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Unit 1 test.

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Answers

1
Which statement is a scientific claim?
Observations of constellations show that stars have moved over time.
3 stars in the constellation Orion look like a belt that a hunter wears.
Observations of certain stars explain why humans behave the way they do.
Constellation Orion is easy to recognize because of the stars in its belt.
2
Students are setting up a test to see if worms prefer 2 different surfaces. Which type of investigation are they doing?
Comparative
Descriptive
Experimental
Controlled
3
Students are investigating how many earthworms occupy a volume of soil. Which type of investigation are they performing?
Controlled
Experimental
Comparative
Descriptive
4
Why is publishing results important in science?
It turns hypotheses into scientific laws.
It adds bias to experimental data.
It allows others to evaluate the results.
It lets scientists show off their imaginations.
5
Smita is testing how a paper airplane's shape affects the distance it flies. Which action shows her logical reasoning?
She follows her procedure carefully.
She decides to perform the experiment outside on a windy day.
She decides to use the same type of paper for each airplane.
She records only the data that support her favorite hypothesis.
6
Which of these is important to gathering and interpreting scientific information?
Legend
Emotion
Logic
Religion
7
Samantha is investigating the densities of several liquids. Which action is the result of her creative thinking?
She records the density of each liquid in a data table.
She uses identical containers to measure each of the liquids.
She decides to compare the densities of liquids commonly added to foods.
She decides to repeat the experiment to see if she gets the same results.
8
Which statement is a hypothesis?
Do earthworms prefer bright light or darkness?
Most of the earthworms moved to the shaded area during the experiment.
The earthworms must all be the same species.
If a worm is given a choice, it will move toward dark rather than light.
9
Which two statements are scientific claims?
The apparent movement of Mars across the sky influences how people behave.
Images of Mars show that it once had liquid water flowing on its surface.
Mars is the best planet in the solar system for humans to explore further.
The polar ice caps of Mars consist mainly of carbon dioxide ice.
10
Which sentence describes a limitation of this model of the solar system?
It does not show that the planets are different sizes.
It does not show the real distances between the planets.
It shows each planet at a different distance from the Sun.
It shows that the solar system has eight planets.
11
Which problem does this model of the solar system solve?
The real-life solar system is too fragile to manipulate by hand.
The real-life solar system is too small when viewed through a telescope.
The real-life solar system is too small to see with ordinary equipment.
The real-life solar system is too large to fit in a laboratory.
12
Which type of investigation involves looking for ways that two or more objects or processes are alike and different?
Experimental investigation
Comparative investigation
Controlled investigation
Descriptive investigation
13
If a scientist gets unexpected results during the first trial of an experiment, what should he or she do next?
Change the data to match expectations.
Repeat the experiment to be sure the results are valid.
Reject the scientific theory not supported by the results.
Publish only the expected data.
14
Which of these are part of a scientific way of gathering information?
Religious beliefs
Fairy tales
Investigations
Opinions
15
A group of students is investigating how many earthworms occupy a given volume of soil.
Controlled
Experimental
Descriptive
Experimental
16
Which two statements describe a claim that is based on science?
It is based on personal bias.
It is based on empirical evidence.
It is based on logical reasoning.
It is based on a long tradition.
17
If the results of an experiment do not support a scientist's hypothesis, what should the scientist do next?
Revise it based on the results and use it to design another experiment.
Accept that it failed and publish the results for peers to review.
Change the data so that they support the original hypothesis.
Abandon the research and investigate a different topic
18
What kind of model is shown?
Mathematical
Computer
Conceptual
Physical
19
Which statement is a hypothesis these students might be using in their experiment?
It's fun to see how fast the cars roll down the steepest ramps.
This tests how the speed of a car changes with the steepness of the hill.
Will a toy car roll faster down a steeper ramp?
If a car rolls down..., then it will be fastest on the steepest

Unit 1 test. Flashcards | StudBud