# Unit 1 Review – Science

```Name:_________________________________________________________Date:___________________Period:______
Unit 1 Review – Physical Science
Show work and units:
1. What is the density of an object with a mass of 60 g and a volume of 2 cm3?
2. If you have a rectangular gold brick that is 2 cm by 3 cm by 4 cm and has a mass of 48 g,
what is its density?
3. If a block of wood has a density of 0.6 g/ cm3 and a mass of 120 g, what is its volume?
4. What is the mass of an object that has a volume of 34 cm3 and a density of 6 g/ cm3?
5. Observation or Inference: Place an O for Observation or I for Inference on the space.
_______ The sandwich smells nasty.
_______ The girls looks 14 years old.
_______ Mr. Yancey is the principal of Westerville North High school.
_______The school is on County Line Road in Westerville, Ohio.
_______A dog is the best pet to have.
6. Three items you use for safety in this science lab are:
a) _______________________________________________________
b) _______________________________________________________
c) _______________________________________________________
7. To smell a chemical in a science lab, you _______________ the odor toward your nose.
8. What are the two types of observations a person can make?
a.) ________________________________
b.) ________________________________
9. In what format do you write a title on a graph? __________________________________________
10. The density of water is equal to __________________________ (don’t forget to include your units!)
11. One cubic centimeter equals _________________________ mL.
12. What is the base unit for measuring each of the following?
Volume _____________________ Mass _______________________ Length ____________________
13. What is the area of an office that is 15 meters by 12 meters?
14. Draw an example of a line graph showing each of the following:
Direct relationship
between two variables
Indirect relationship
between two variables
No relationship
between two variables
15. What is the volume of box that is 5 cm by 8 cm by 2 cm?
16. What does DRY MIX stand for?
17. What is the metric ladder? Write it below.
18. Name a tool to measure the mass of a paperclip. ___________________________________________
19. Name a tool used to measure the length of the hallway. ______________________________________
20. Name a tool used to measure the volume of a bottle of Gatorade. ______________________________
22. In the following scenarios identify the independent variable, dependent variable, control, and one
constant.
A researcher is curious to find out what effect classical music has on people’s level of relaxation (as
measured by heart rate). He suspects that listening to classical music will make people feel more calm
and relaxed. He lets one group listen to classical music for one hour. He lets another group sit in a
quiet room for one hour (i.e they hear no music). After one hour, he monitors the heart rate of each
participant to measure their level of relaxation.
Independent Variable:
Dependent Variable:
Control:
Constants:
A psychology teacher allowed his third period class to eat snacks while taking an exam. His fourth
period class was not allowed to eat snacks while taking the same exam. He compared the test averages
from both classes. Prior to this, both classes averaged comparable exam scores.
Independent Variable:
Dependent Variable:
Control:
Constants:
The leading producer of paper products wants to increase their sales of paper cups. They set up a test
program in local supermarkets. Identical 8 ounce paper cups were packaged in two ways—half of the
stock was packaged in the present plain boxes, while the other half of the stock was packaged in
bright, cheery, pastel-colored boxes. Sales volumes for each type of package were recorded over a
period of six months.
Independent Variable:
Dependent Variable:
Control:
Constants:
Question: Does the mass of a wooden block affect the density?
Design an experimental procedure to test the question above. Assume you have multiple size blocks made of
the same type of wood to use in your experiment.
Now use the following rubric to grade your own procedure. On a scale of 1 -5, how well did you write your
experiment?
Characteristic of a Good Procedure
Is it reproducible?
Is only one independent variable being changed at a
time while all other variable are held constant?
Is it clear how the dependent variable will be measured?
Are there a sufficient number of trials?
Is there a control trial?
Score (1 point each)
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