A student thinks that orange juice will
freeze faster than water. She fills identical
containers with the same amount of the
liquids, places each in the freezer, and
discovered that water froze first. Which
should the student do next?
A Change her results to match her
hypothesis.
B Repeat her investigation to see if her
results are the same.
C Conclude that investigations can only be
performed on water.
In an experiment, Jackson tested to see
how the size of rocks affects the
amount of dirt that washes away when
water flows downhill. Which variable
was manipulated?
F Amount of water
G Slope of the hill
H Size of the rocks
J Type of dirt
A group of students was preparing an
activity to determine whether certain
materials will float or sink when placed on
water. Before the experiment
started, one student said, “I think the
sponge will float.” This statement was —
F a conclusion
G a fact
H an observation
J a prediction
Sandy is conducting an investigation to
find out which food his dog likes best.
Which is the manipulated variable in his
investigation?
F The color of his dog’s food dish
G The kind of food he gives his dog
H The amount of food he gives his dog
J The time of day he feeds his dog
B – Repeat her
investigations
H – Size of the rocks
J – a prediction
G – The kind of food
he gives his dog
Which of the following is an observation
about grasshoppers that a science
class could have made on their nature
walk?
A The grasshoppers will live longest in a
container filled with plants.
B The grasshoppers are green with long back
legs and antennae.
C The grasshoppers will probably eat more
grass than tree leaves.
D The grasshoppers all hatched from eggs
laid the year before.
Three baseball players investigate to see
who can throw a baseball the
farthest. They mark off an area on the
playground for their investigation.
Which should they keep constant?
A Height of players
B Color of the baseballs thrown
C Order in which the players throw
D Spot from which players throw
Students notice that in the fall leaves of
sugar maple trees turn red, but the
leaves of black oak trees turn brown. The
students are making —
F an observation
G a conclusion
H a prediction
J an inference
Students want to learn which of two soils
holds more water. They put clay in
one bottle and sand in the other. Then
they put equal amounts of water in the
bottles. Some of the water drained into
beakers. Which of these is the
manipulated, independent variable?
A Type of soil
B Type of beaker
C Amount of water
D Number of bottles
B – The
grasshoppers are
green with long back
legs
D – Spot from which
players throw
F – an observation
A – Type of soil
A group of students tested the effects of
different amounts of water on ivy
plant growth. Afterwards, they could not
remember how much each plant
grew per day. What should they have done
to practice good science?
A Discuss their observations with other
groups in their class.
B Conduct the experiment with more than
one type of plant.
C Record daily information in a data table.
D Make up explanations for the results.
Max is doing an experiment on tomato
plants. His hypothesis is, “A tomato
plant will not grow in a shady area.” On
which of these relationships did Max
base his hypothesis?
A Warm temperature causes plant growth.
B Sunlight causes plant growth.
C Tall plants cause shade.
D New plants need fresh water.
Students planted bean seeds in the same
kind of soil in separate cups. The
cups were put next to each other on a
sunny windowsill. Cup 1 was given
10 mL of water every other day. Cup 2 was
given no water. Which of these is
the independent (manipulated) variable in
the experiment?
A The type of soil
B The type of seed
C The amount of water
D The amount of sunlight
According to the picture, which of these is
an inference rather than
an observation?
F This animal has hair.
G This animal has a tail.
H This animal is arching its back.
J This animal is frightened.
C – Record daily
information in a
data table
B – Sunlight causes
plant growth
C – The amount of
water
J – This animal is
frightened
A student designed an investigation to
test the effect of light color on
plant growth using different colors of light
bulbs. What was the manipulated
(independent) variable in
the investigation?
A Color of light bulb
B Height of plant
C Hours of light
D Size of pot
A – Color of light
bulb
An educated prediction about what will
happen in a science experiment is:
A
B
C
D
a manipulated variable
a controlled variable
an inference
a hypothesis
A variable in an experiment that is
purposely changed by that experimenter
is called a:
A
B
C
D
a manipulated (independent) variable
a responding (dependent) variable
a controlled variable (a constant)
a hypothesis
D – a hypothesis
A – a manipulated
variable
The things in an experiment that are
purposely kept the same are called:
A
B
C
D
manipulated (independent) variables
responding (dependent) variables
controlled variables (constants)
hypotheses
C – controlled
variables
Which of the following is an inference?
A
B
C
D
It’s going to rain soon.
The sky is dark.
It’s sunny outside.
There are dark clouds in the sky.
A – It’s going to rain
soon.
What of the following is an observation?
A
B
C
D
The boy is sad.
The boy is crying.
The boy is excited about his birthday party.
The boy is mad.
B – The boy is crying.
Which of the following is an inference?
A The baby has blue eyes.
B The baby is happy.
C The baby has a green blanket on her
head.
D The baby has brown hair.
Which of the following is an observation?
A
B
C
D
The dog is crazy.
The dog is mean.
The dog is scared.
The dog is brown.
B – The baby is
happy.
D – The dog is
brown.
In an experiment to measure how different
types of soil affect tulip growth, you will
fill 5 identical pots with different types of
soil and place a tulip bulb in each pot. The
manipulated (independent) variable is the:
A
B
C
D
soil
pots
tulip bulbs
amount of sunlight each tulip receives
In an experiment to measure how different
types of soil affect tulip growth, you will
fill 5 identical pots with different types of
soil and place a tulip bulb in each pot.
Which of the following is NOT a constant
(controlled variable)?:
A soil
B pots
C tulip bulbs
D amount of sunlight each tulip receives
In an experiment to measure how different
types of soil affect tulip growth, you will
fill 5 identical pots with different types of
soil and place a tulip bulb in each pot. The
pots, tulip bulbs, and the amount of
sunlight and water each tulip receives are
the:
A
B
C
D
manipulated (independent) variables
responding (dependent) variables
controlled variables (constants)
hypotheses
Making an educated
guess about the
outcome of an
experiment is called a
_____.
A – soil
A – soil
C – controlled
variables
hypothesis
What type of
observations uses your
five senses?
What type of
observations use
measurements or
numbers?
Something you observe
with your own eyes is
called a _____.
When you explain or
making sense of your
observations, you are
making a(n) _____.
qualitative
quantitative
observation
inference
The steps scientists use to
help figure out why things
happen the way they do is
called the
________________________.
scientific method
Which 2 observations are
quantitative?
A.
B.
C.
D.
The apple is red.
The apple weighs 20 grams.
The apple has a diameter of 30 cm.
The apple tastes sweet.
B and C
Which 2 observations are
qualitative?
A.
B.
C.
D.
The sweater is red.
The sweater weighs 550 grams.
The sweater is soft.
The sweater has 7 black flowers on
Which observation
(qualitative or
quantitative) is more
scientific?
A and C
quantitative