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WorksheetsNOS Unit Test
Total questions: 37
Worksheet time: 2hrs 59mins
Ms. Umholtz performs an experiment by comparing the number of drops of tap water that can fit on a penny to the number of drops of soapy water that can fit on a penny. She performs three trials. What is the independent variable?
Number of drops of tap water
Number of drops of soapy water
Type of water used
Amount of drops that can fit on the penny
Ms. Umholtz performs an experiment by comparing the number of drops of tap water that can fit on a penny to the number of drops of soapy water that can fit on a penny. She performs three trials. What is the dependent variable?
Number of drops of tap water
Number of drops of soapy water
Type of water used
Amount of drops that can fit on the penny
Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating krabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat krabby patties with the new sauce. The other 50 (Group B) eat krabby patties with sauce that looks just like new sauce but is really just a mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production.
Which people are in the control group?
Group A
Group B
Helen is studying the growth of two different types of plants. She planted two of each type of plant in locations with different levels of sunlight: full sun, partial shade, and full shade. For five weeks, Helen records the number of new leaves on each plant.
Which of the following statements correctly describes the independent and dependent variables in Helen's experiment?
The independent variable is the kind of plant, and the dependent variable is the amount of sunlight.
The independent variable is the amount of sunlight, and the dependent variable is the number of new leaves.
The independent variable is the amount of sunlight, and the dependent variable is the kind of plant.
The independent variable is the number of new leaves, and the dependent variable is the amount of sunlight.
The following bar graph shows the population of bacteria under different temperature ranges. What can be concluded about the bacteria from reading this graph?
They thrive at exactly 30°C.
They cannot tolerate temperatures above 50°C.
They prefer temperatures between 20°C and 30°C.
They prefer warmer temperatures to cooler temperatures.
kelvin (K), mole (mol), candela (cd), Kilo- (k)
SI Base Base Units
English System of Measurement
Numbers only used in Math Classes.
Numbers based on animals and candles.
An example of a question science can answer is ___.
How does blood carry oxygen.
Which video game is the most fun to play.
God created the world in 6 days then rested on the 7th day.
Which is an example of a number written using the International System of Units (SI)?
100 Kilometers
5,280 Feet
68.0 °F
To convert between numbers in the metric system you would...
multiply or divide by powers of 10
add 16 then divide by 24
multiply by 60 seconds
not do anything.
Why so scientists sometimes use scientific notation when writing numbers?
Very small or very large numbers can be written shorter.
Because they are scientists and this is the only numbers they know how to write
Very large numbers can be written with lots of zeroes this way.
[(Experimental Value - Accepted Value) ÷ Accepted Value ] x 100%
Percent Error Equation
Linear Equation
Slope-Intercept Equation
Distance Formula
Glassware, Balances, Thermometers, Hot Plates = Scientific Tools
True
False
Which of the following is NOT one of the main categories of science?
Life
Pseudo
Physical
Earth
Students want to know which fertilizer will cause their plants to grow the fastest, so they add 3 different fertilizers to their plants and measure how much they grow over the next 10 days. This is an example of a(n) _________.
observation
experiment
model
The name for a common set of steps scientists use to conduct investigations is the __________ ______.
(a)
Gathering of data using senses and tools.
observing
classifying
predicting
concluding
Which of the following should NOT be worn during a laboratory activity?
Loose clothing
Dangling jewelry
Sandals
All of the above.
When we test our hypothesis, there are two types of variables. What are they?
Independent and controlled variable
dependent and controlled variable
independent and dependent variable
none of the above
What is an observation?
Something you measure or detect with your senses.
The way you feel about something
An educated guess
A theory that has been disproved
Another word for prediction or educated guess is: ________________
hypothesis
conclusion
experiment
data
What step does every scientific experiment begin with?
hypothesis
question/problem
background research
conclusion
What is used to measure the volume of liquids?
Flask
Beaker
Graduated Cylinder
Pipette
This is used to find the mass of an object
graduated cylinder
inference
observation
triple beam balance
The first thing you should do if you get injured in the lab is
tell the instructor immediately
see a doctor after school
visit the school nurse after class
apply first aid yourself
What should you wear in science lab to be safe and protected from dangerous chemicals?
Goggles
Lab apron
Closed toe shoes
ALL OF THESE
7,000 g = ____ kg
70
700
7
0.07
240 cm = ___________ m
2400
24
2.4
0.24
68 cm = ___________ mm
0.68
6.8
68
680
What is the basic unit of mass in the metric system?
Liter
Meter
Gram
Kilometer
Select the largest unit.
kilogram
centigram
decigram
decagram
1000 grams = _____ kilograms
0.0001
1,000,000
10
1
The amount of space occupied by an object is called?
Mass
Volume
Length
Measurement
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