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Mod K, Unit 2 Final Exam

Authored by Marseli Frank Sablan

Science

7th Grade

NGSS covered

Used 18+ times

Mod K, Unit 2 Final Exam
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40 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Identifying the independent and dependent variables in an experiment will help you better interpret and convey results. What is the difference between the independent and dependent variables in an experiment?

The independent variable is always a number, and the dependent variable is never a number.

The independent variable is what you control, and the dependent variable is what changes as a result.

The dependent variable is what the investigator controls, and the independent variable is what happens as a result of this.

The dependent variable is typically found in the first column of a table, and the independent variable is typically found in the second column.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a limitation of using a model to study something?

A model cannot represent a thing exactly.

A model cannot help study things that are dangerous.

A model cannot reproduce things that are too far away.

A model cannot show things that are too small or too large.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Scientists often use visual or mathematical representations to investigate items that are very large, very small, or otherwise difficult to study. What are these visual or mathematical representations called?

experiments

hypotheses

models

observations

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A graph can help scientists display and convey data. What part of a line graph shows trends?

title

legend

x- and y-axis labels

line of best fit

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The pie graph below shows the distribution of grades on a test taken in Dr. Kurilla’s class.


If 20 students took the test, how many students earned a grade of B or better?

9 students

12 students

15 students

18 students

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist wants to track a hurricane and predict where it will go next. What is the best tool for the scientist to use?

a computer

a hand lens

an electron microscope

a magnetic resonance image

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

NGSS.MS-ESS3-2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the most likely reason why scientists use approximate measurements?

Scientists do not use approximate measurements as that would be unscientific.

Scientists use approximate measurements to determine whether the data they collected is reasonable.

Scientists use approximate measurements to record images of objects or environments in a brief interval of time.

Scientists use approximate measurements to help take measurements that cannot be detected by the senses alone.

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