NEW
Font size
S
M
L
XL
Worksheets6th Grade Mid term Review
Total questions: 47
Worksheet time: 24mins
Name
Class
Date
1.
1. For his science project, a student collects data on hawks spotted at the bird sanctuary. For the first five days of his study, he counted 7, 11, 8, 15, and 14 hawks. What type of observation do these data represent?
a)
an inferred observation
b)
a quantitative observation
c)
a qualitative observation
d)
a classified observation
2.
When a scientist develops new sources and ways to help solve problems or produce new things, he or she is practicing the attitude of
a)
creativity
b)
curiosity
c)
honesty
d)
skepticism
3.
Scientists use objective thinking instead of subjective thinking to find answers to scientific questions. Objective thinking means drawing conclusions
a)
based on personal feelings
b)
based on what you are told
c)
based on available evidence
d)
based on rumors
4.
The kelvin is the basic SI unit of
a)
length
b)
temperature
c)
energy
d)
weight
5.
A scientific law
a)
explains patterns in nature
b)
describes patterns in nature
c)
changes patterns in nature
d)
sets rules for nature to follow
6.
A scientific theory is a
a)
guess or hunch about the right answer
b)
quickly formulated hypothesis
c)
law of nature
d)
tested explanation of many experiments and observations
7.
What is the main reason scientists from different fields often work together?
a)
It allows scientists to combine different scientific laws.
b)
most scientific projects involve more than one field of science
c)
Data from one field often disprove data from another field
d)
By law, scientists must collaborate
8.
The density of an object is
a)
its mass divided by its length
b)
its mass divided by its volume
c)
its volume divided by its mass
d)
its mass multiplied by its volume
9.
Scientists cannot really measure or calculate the exact number of stars in the universe, so they use approximate values. These approximate values are called
a)
calculations
b)
estimations
c)
guesses
d)
assumptions
10.
What is the median of the following list of mass measurements? 1.3 g, 2.0 g, 4.1 g, 4.9 g, 5.7 g, 5.9 g, 6.0 g, 6.4 g, 7.2 g
a)
4.1 g
b)
4.9 g
c)
5.7 g
d)
5.9 g
11.
Mass and weight are different because
a)
mass is the measure of the force of gravity acting on an object.
b)
weight is the measure of the force of gravity acting on an object
c)
the mass of an object would be different on the moon.
d)
the weight of an object is constant
12.
Which type of graph is most useful for showing the growth of a tree over time?
a)
bar graph
b)
line graph
c)
pie graph
d)
circle graph
13.
Which of the following is an example of a scientific model?
a)
a computer program showing how dinosaurs moved
b)
a weather satellite
c)
a plant in a pot
d)
a key to identifying birds
14.
Cloud formation is a good example of a
a)
input a
b)
a system
c)
feedback
d)
a need
15.
Which of the following describes a tick life cycle?
a)
It is a model of simple system
b)
it is a variable
c)
it is a model of a complex system
d)
it is a theory
16.
Interpreting based on observations and what you already know is called
a)
inferring
b)
predicting
c)
classifying
d)
experimenting
17.
Scientists use experiments to study the natural world. What are two other ways scientists can gain scientific knowledge?
a)
observation and modeling
b)
predictions and inferences
c)
calculating means and ignoring anomalous data
d)
using opinions and subjective reasoning
18.
Which of the following is common to scientists working in different fields of science?
a)
They work in the same labs
b)
They use the same tools
c)
they carry out the same experiments
d)
they base their work on common scientific principles
19.
Which of the following is a valid reason why a scientist might reject a scientific theory?
a)
Some people disagree with it
b)
it covers too broad a topic
c)
New evidence contradicts it
d)
it applies everywhere in nature
20.
Which of the following is one of the three major branches of science?
a)
chemical science
b)
life science
c)
medical science
d)
research science
21.
Recent tests using DNA analysis have resulted in changes in the classification of many living organisms. What does this example show about the process of scientific inquiry?
a)
Theories can be modified as new evidence is found.
b)
Existing theories will all change eventually.
c)
Old theories are of no value to the scientific community.
d)
New scientific theories are probably wrong, too.
22.
On his voyage on the HMS Beagle, Darwin saw fossils of giant sloths whose bones resembled bones of living sloths, but were much larger in size. Darwin hypothesized that the fossil sloths were related to sloths alive today. This hypothesis was based on
a)
observation and inference
b)
experimentation
c)
using a model
d)
making a prediction
23.
Which of the following is true of the Celsius scale?
a)
212° is the boiling point of water
b)
120° is the boiling point of water.
c)
0° is the freezing point of water.
d)
32° is the freezing point of water.
24.
Which of the following is an SI unit used to measure mass?
a)
kelvin
b)
joule
c)
newton
d)
kilogram
25.
Which SI unit is appropriate for reporting the density of a substance?
a)
cm/L
b)
L/kg
c)
g/cm3
d)
m/s2
26.
What is the volume of the liquid in the graduated cylinder below?
a)
43 cm
b)
43 cubic inches
c)
43 square mililiters
d)
43 cubic centimeters
27.
Mr. Reid’s students planted lima beans during a four-day span. Each plant was given the same amount of water and sunlight. The students measured the growth of the plants each day and collected the data for ten days. Which of the following was a controlled variable in the experiment?
a)
the cost of the pots
b)
the height of each plant
c)
the amount of fertilizer each plant received
d)
the amount of water each plant received
28.
When measurements are close to their true values, the measurements are said to be
a)
accurate
b)
estimated
c)
precise
d)
standardized
29.
Which of the following is a chemical property of an iron nail?
a)
It can conduct electricity.
b)
It can rust.
c)
It can conduct heat.
d)
It can be bent.
30.
What is density?
a)
mass times volume
b)
weight times volume
c)
weight divided by volume
d)
mass divided by volume
31.
Which state of matter has neither a definite volume nor a definite shape?
a)
solid
b)
liquid
c)
gas
d)
none of the above
32.
Which of these is a chemical change?
a)
toasting a marshmellow
b)
melting ice
c)
breaking a toothpick in half
d)
boiling water
33.
Which of the following is an example of a homogeneous mixture?
a)
trail mix
b)
salad
c)
honey
d)
sand
34.
Which statement about mass and weight is correct?
a)
“Mass” is the scientific term for “weight.”
b)
Weight directly measures force of gravity while mass directly measures amount of matter.
c)
Weight has units of kilograms or grams.
d)
Mass has units of newtons.
35.
In a physical change
a)
objects can rust.
b)
the original substances are replaced by new substances
c)
all substances involved keep their own properties
d)
matter is changed
36.
Which of the following examples in nature represents a chemical change?
a)
water freezing in a pond
b)
a tree branch breaking
c)
a tree burning after a lightning strike
d)
steam rising from pavement
37.
The particles in a solid
a)
can only vibrate in place
b)
do not move at all
c)
move around freely
d)
move and spread apart
38.
Which of the following statements is true about the particles in a liquid?
a)
They are not restricted by their container.
b)
They are held in place and can only vibrate
c)
They slide around one another but still touch.
d)
They do not move unless they are heated.
39.
All of the following are examples of physical properties except
a)
melting point
b)
hardness
c)
ability to burn
d)
density
40.
What is the basic SI unit that is appropriate for measuring the temperature of water in a beaker?
a)
degrees farenheit
b)
gram
c)
kelvin
d)
cubic meter
41.
The fact that matter is neither created nor destroyed in any chemical or physical change is called the
a)
law of exothermic change.
b)
law of endothermic change
c)
law of thermal matter
d)
law of conservation of mass
42.
1. Tamara uses sticks and balloons to show how bones and muscles move. She is using a
a)
variable
b)
theory
c)
hypothesis
d)
Model
43.
Kate is measuring the direction and speed of the wind on each side of the school building for a class project. What is the scientific reason for her to keep accurate notes about when, where, and how she collects the data?
a)
so she can predict the weather accurately
b)
so she can fill out the lab report required by her teacher
c)
so her classmates know she really did the work
d)
so others can check er data and conclusions
44.
Andy repeats the same measurement several times using the same method and the same equipment. The precision of his measurements refers to
a)
how close his measured values are to each other.
b)
how close his measured values are to a true or accepted value
c)
how good a feeling he has about the measurements
d)
a. how careful he is in making the measurements.
45.
What is the main purpose of lab safety rules?
a)
to make sure students wear the proper clothing to lab
b)
to ensure the safety of you, your teacher, and your classmates
c)
to lower the potency of the chemicals and equipment in labs
d)
to find out if students are willing to follow directions
46.
A well-tested explanation for a wide range of observations or experimental results is called a scientific
a)
law
b)
hypothesis
c)
theory
d)
variable
47.
Which of the following is an example of a physical change?
a)
burning
b)
melting
c)
rusting
d)
corroding
Reset
