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Worksheets7th grade Science Sem 1 study guide
Total questions: 41
Worksheet time: 21mins
Name
Class
Date
1.
What must be true of a conclusion to a controlled experiment?
a)
A conclusion must show that the hypothesis was incorrect
b)
A conclusion must relate the data to the hypothesis
c)
A conclusion must show that the data support the hypothesis
d)
A conclusion must be reached for every experiment
2.
Measurements of the heights of various plants in an experiment are called
a)
Inquiries
b)
Data
c)
Theories
d)
Inferences
3.
What skill is a scientist using when she listens to the sounds that whales make
a)
Making observations
b)
Interpreting data
c)
developing hypothesis
d)
drawing conclusions
4.
What is the most important skill in any experiment
a)
Practicing safe laboratory practices
b)
Making measurements
c)
Making observations
d)
Communicating ideas
5.
When you analyze a table of measurements taken during an experiment, you are
a)
Posing questions
b)
Manipulating variables
c)
Making inferences
d)
Interpreting data
6.
A controlled experiment is designed to test a(n)
a)
Measurement
b)
Data
c)
Conclusion
d)
Hypothesis
7.
When a scientist shares his or her findings with other scientists, the scientist is
a)
Hypothesizing
b)
Theorizing
c)
Experimenting
d)
Communicating
8.
A hypothesis is a
a)
Factor that stays the same during an experiment
b)
The use of one or more senses to gather information
c)
Factor that is changed during an experiment
d)
Possible explanation for observations
9.
Around the world, scientists use a system of measurements known as the International System of Units
a)
True
b)
False
10.
When you decide whether or not the data supports the original hypothesis, you are
a)
Posing a question
b)
Making an inference
c)
Drawing a conclusion
d)
Making an observation
11.
A well-tested scientific concept that explains a wide range of observations is called a
a)
Scientific hypothesis
b)
Scientific theory
c)
Scientific inquiry
d)
Scientific method
12.
A chart showing the amount of rain each month in a region is an example of a scientist's
a)
Variables
b)
Data
c)
Inferences
d)
Conclusions
13.
A statement that describes what scientists expect to happen every time under a given set of conditions is called a scientific
a)
Law
b)
Hypothesis
c)
Inference
d)
Observation
14.
In an experiment, the variable that changes as a result of changes in the manipulated variable is the
a)
Controlled variable
b)
Inferred variable
c)
Responding variable
d)
Hypothesis
15.
The density of a block of wood with a volume of 50 cubic centimeters and a mass of 100 grams is
a)
500 g/cm^3
b)
2 g/cm^3
c)
5,000 g/cm^3
d)
0.5 g/cm^3
16.
The diverse ways in which scientists study the natural world is known as scientific inquiry
a)
True
b)
False
17.
Kinetic energy increases as
a)
Both mass and velocity increase
b)
Mass decreases and velocity increases
c)
Mass increases and velocity decreases
d)
Both mass and velocity decrease
18.
A symbol shows the ratio of elements in a compound
a)
True
b)
False
19.
The energy associated with motion is called
a)
Gravitational potential energy
b)
Kinetic energy
c)
Nuclear energy
d)
Elastic potential energy
20.
The ability to do work is called
a)
Friction
b)
Conversion
c)
Velocity
d)
Energy
21.
The measurement of the force of gravity on an object is the object's
a)
Density
b)
Weight
c)
Volume
d)
Mass
22.
Which of the following has kinetic energy
a)
An archer's bow that is drawn back
b)
A rolling bowling ball
c)
A rock poised for a fall
d)
A car waiting at a red light
23.
SI unit for mass is the
a)
Kilogram
b)
Ounce
c)
Liter
d)
Pound
24.
Substances that CANNOT be broken down chemically into other substances are
a)
Mixtures
b)
Compounds
c)
Liquids
d)
Elements
25.
All of the following are examples of properties EXCEPT
a)
Symbols
b)
Hardness
c)
Color
d)
Flammability
26.
Chemistry is the study of the properties of matter and the changes matter can undergo
a)
True
b)
False
27.
One example of a physical change is
a)
Mixing a milkshake
b)
Baking cookies
c)
Burning paper
d)
The rusting of Iron
28.
A change that produces one or more new substances is call a physical change
a)
True
b)
False
29.
The process of burning a fuel is called
a)
Combustion
b)
Acceleration
c)
Conduction
d)
Meltdown
30.
Which type of matter consists of two or more substances that are NOT chemically combined
a)
Elements
b)
Mixtures
c)
Compounds
d)
Atoms
31.
Visible light is an example of
a)
Nuclear energy
b)
Chemical energy
c)
Electromagnetic energy
d)
Electrical energy
32.
Potential energy that depends on height is called
a)
Kinetic energy
b)
Elastic potential energy
c)
Gravitational potential energy
d)
Mechanical energy
33.
If you landed on the moon, your weight there would be the same as when you are on Earth
a)
True
b)
False
34.
Which of the following changes demonstrates a chemical property
a)
Substance breaks in half
b)
Substance combusts
c)
Hammer bounces off substance
d)
Substance floats in water
35.
Which of the following is a solution
a)
Salt water
b)
Macaroni and cheese
c)
Trail mix
d)
Vegetable soup
36.
The abilities to dissolve in water and change color are examples of
a)
Natural properties
b)
Chemical properties
c)
Natural laws of matter
d)
Physical properties
37.
Which is the correct equation for calculating density
a)
Density=Mass/Volume
b)
Density=Mass/Weight
c)
Density=Volume/Mass
d)
Density=Volume/Weight
38.
Weight is a flawed measure of mass because
a)
Is not used in other countries
b)
Is affected by the force of gravity
c)
Tends to fluctuate
d)
Can be influenced by temperature and pressure
39.
Which of the following describes physical change
a)
A marshmallow burns over an open fire
b)
Icicles melt from a rooftop
c)
A cat eats a piece of fish
d)
Milk turns sour
40.
The law of conservation of mass states that
a)
Matter is neither created nor destroyed
b)
The mass of an object remains the same even if chemical change occurs
c)
The number of molecules before and after a chemical reaction cannot change
d)
Mass is lost when a chemical change occurs
41.
Temperature is
a)
The movement of thermal energy from a solid to a liquid
b)
The difference in thermal energy between two objects
c)
A measure of how hot or cold something is
d)
A measure of how fast thermal energy is moving
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