This work is part of which process used in developing scientific theories?

Using new technology to provide additional supporting data

You're testing how a paper airplane's shape affects the distance it will fly. Which is the result of logical reasoning?

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

Why is publishing results important in science?

It allows others to evaluate the results.

Which statement describes a claim that is based on science?

It is based on empirical evidence.

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 characteristic is a limitation of the student's model?

The model is missing plants, fish, and other details found in a real river.

Which problem does this model of the solar system solve?

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

Which statement is a hypothesis?

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

What is the responding variable in this experiment?

The color of the apple wedges after 1 hour

What is one way the teacher could replicate this experiment?

Repeat the experiment on 10 more apples.

What are is limitation of using a marble to model an atom?

The model does not show the true size of an atom.

Which statement best describes the use of the balloons in this experiment?

Logical; it allows the student to catch any invisible gases given off

Which statement is a scientific claim?

Observations of constellations show that stars have moved over time.

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

If a toy car is rolls down a steeper ramp, it will roll faster

Which evidence could have helped disprove the geocentric theory and lead to the development of the heliocentric theory?

The moons of the planet Jupiter are observed revolving around Jupiter.

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Unit 1 DL 8th Grade Science

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Questions 22

Answers

1
This work is part of which process used in developing scientific theories?
Using imagination to spark new ideas
Using new technology to provide additional supporting data
Using new technology to replace outdated theories with new ideas
Using new data to modify an existing scientific theory
2
How many centimeters is the real cell's length?
7500 cm
0.03 cm
33 cm
0.002 cm
3
You're testing how a paper airplane's shape affects the distance it will fly. Which is the result of logical reasoning?
She decides to use the same type of paper for each airplane.
She follows her procedure carefully.
She records only the data that support her favorite hypothesis.
She decides to perform the experiment outside on a windy day.
4
Which of these is important to gathering and interpreting scientific information?
Religion
Legend
Emotion
Logic
5
Why is publishing results important in science?
It lets scientists show off their imaginations.
It allows others to evaluate the results.
It turns hypotheses into scientific laws.
It adds bias to experimental data.
6
Which statement describes a claim that is based on science?
It is based on personal bias.
It is based on empirical evidence.
It is based on a long tradition.
7
Which type of investigation involves looking for ways that two or more objects are alike and different?
Controlled investigation
Experimental investigation
Descriptive investigation
Comparative investigation
8
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.
Change the data to match expectations.
Reject the scientific theory not supported by the results.
Publish only the expected data.
9
Which characteristic is a limitation of the student's model?
The model river water flows downhill instead of uphill like real rivers
The model soil is nothing like the soil found in a real riverbed.
The model is missing plants, fish, and other details found in a real river.
10
How tall should the real tree house door be?
39 cm
14 cm
126 cm
45 cm
11
Which type of investigation is the group doing?
Descriptive
Experimental
Comparative
Controlled
12
What kind of model is shown?
Conceptual
Physical
Mathematical
Computer
13
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 large to fit in a laboratory.
The real-life solar system is too small to see with ordinary equipment.
The real-life solar system is too small when viewed through a telescope.
14
Which statement is a hypothesis?
The earthworms must all be the same species.
Do earthworms prefer bright light or darkness?
If a worm is given a choice, it will move toward darkness rather than light
Most of the earthworms moved to the shaded area during the experiment.
15
What is the responding variable in this experiment?
The liquid the apple wedges were dipped in
The size of the apple wedges
The color of the apple wedges after 1 hour
The lemon juice applied to one of the apple wedges
16
What is one way the teacher could replicate this experiment?
Repeat the experiment using liquids other than lemon juice and water.
Repeat the experiment in a darkened room.
Repeat the experiment using fruits other than apples.
Repeat the experiment on 10 more apples.
17
Which of these are part of a scientific way of gathering information?
Fairy tales
Religious beliefs
Investigations
Opinions
18
What are is limitation of using a marble to model an atom?
The model is much harder to see than a real atom.
The model is not made of commonly available materials or objects.
The model does not show the true size of an atom.
19
Which statement best describes the use of the balloons in this experiment?
Imaginative; it makes the experiment feel like a party
Biased; it means that not all the variables are properly cont
Creative; it allows the student to add color to the experiment
Logical; it allows the student to catch any invisible gases given off
20
Which statement is a scientific claim?
Three stars in Orion look like a belt that a hunter might wear.
Orion is the easiest to recognize because of the stars in its belt.
Observations of constellations show that stars have moved over time.
Observations of certain stars explain why humans behave the way they do.
21
Which statement is a hypothesis these students might be using in their experiment?
This experiment tests how the speed of a toy car changes with the steepness
If a toy car is rolls down a steeper ramp, it will roll faster
It's fun to see how fast the cars roll down the steepest ramps.
Will a toy car roll faster down a steeper ramp?
22
Which evidence could have helped disprove the geocentric theory and lead to the development of the heliocentric theory?
Earth's moon appears larger in the sky than the Sun.
Objects in the sky (sun) appear to revolve around Earth on a daily cycle.
The moons of the planet Jupiter are observed revolving around Jupiter.
The planet Earth appears to be a stationary point in space.

Unit 1 DL 8th Grade Science Flashcards | StudBud