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Nature of Science Test Review

Total questions: 54

Worksheet time: 5hrs 30mins

Name
Class
Date
1.

Which of the following statements about hypotheses is true?

a)

Hypotheses can never be

changed.

b)

Hypotheses are always proven to be true.

c)

Hypotheses can be accepted or rejected

d)

Hypotheses can be proven true without evidence.

2.
Waldriana would like to investigate the effect of temperature on the amount of food birds eat.  What should she do first to begin her investigation?
a)
develop a question 
b)
conduct background research
c)
design an experiment
d)
come up with a theory
3.
Which question would be best to answer using a scientific investigation?  
a)
Why are people afraid during thunderstorms?
b)
How easy is it to shovel snow?
c)
Are some clouds prettier than others?
d)
Does temperature affect the amount of rain?
4.
A group of people trained to climb a mountain.  As they practices in high altitudes, a researcher measured changes in their lung strength.  Why is it important that her study has a control group?
a)
O  to ensure that everyone in the group was strong enough to climb a mountain
b)
to test equipment for measuring lung strength
c)
to share her research with as many people as possible
d)
to compare typical lung strength with the effects of training
5.
Austin is studying states of matter by heating water in a pan.  Which statement from his notebook is an observation?
a)
It is hard to estimate the size of the bubbles.
b)
Tiny bubbles form on the bottom of the pan.
c)
The bottom of the pan must be very hot.
d)
I think there is air in the bubbles.
6.
How many variables should be changed in a simple experiment?
a)
5
b)
3
c)
1
d)
6
7.
Jaylynn says a baseball and a basketball will fall at the same speed.  Her friend disagrees.  Which of these is the best way for them to find out?
a)
drop both balls from a high place and compare how fast they fall
b)
ask an adult which one is right
c)
explain their reasons to each other
d)
ask twenty different people on the playgroup what they think
8.
Amanda makes the following hypothesis:  If the humidity increases, it will help plants grow.  Which of these describes a controlled experiment that would best help Amanda prove or disprove her hypothesis?
a)
recording the number of tall plants and short plants in different fields that have different humidity levels
b)
observing plant growth in a greenhouse with a constant humidity and in a greenhouse with changing humidity
c)
O  measuring the temperatures and humidity in a greenhouse that has both short and tall plants growing in it
d)
O  making a model to observe whether water collects on the walls of a greenhouse with increasing humidity
9.
Scientists are studying how bears kept in zoos behave.  Which of these would be the best control group?
a)
bears in the wild
b)
bears kept as pets
c)
other animals in zoos
d)
other animals in the wild
10.
1.  Why is it important to have a control in an investigation?
a)
Controls are used to show that different results are caused by changing the variable.
b)
Without controls, it is not possible to make a hypothesis.
c)
A control helps us to predict.
d)
Controls are the answer to the investigative question.
11.
A scientist tested an exercise machine.  He had two groups of volunteers.  Group A exercised every day for a month.  Group B did not exercise.  He made the table below to compare their muscle strength over 30 days. What is Group B’s role in the scientist’s investigation?
a)
Group B's role is the variable.
b)
Group B's role is the control group.
12.
Jonathan and Renier dropped a rubber ball from the same height onto six different surfaces.  They measured the height of each bounce and recorded their data.  The graph shows their data.  Based on the data, which of the following is the best conclusion?
a)
All balls bounce higher indoors than they do outdoors.
b)
The surface has no affect on the height of the bounce.
c)
A rubber ball does not bounce as high as a super ball.
d)
A rubber ball bounces higher on harder surfaces.
13.

A scientific idea tested by multiple scientists and supported by multiple pieces of tested factual evidence is a...

a)

Theory

b)

Scientific Law

c)

Hypothesis

d)

Fact

e)

Data

14.

A scientific concept. Explains mathematically what happens but not why.

a)

Theory

b)

Scientific Law

c)

Hypothesis

d)

Experiment

e)

Fact

15.
A student conducting an investigation to determine the effect of temperature on the metabolism of yeast. Yeast and sugar are added to water, the gas produced is captured, and its volume is recorded. Which variables should be held constant during this investigation?
a)
Mass of sugar and water temperature
b)
Mass of yeast and mass of sugar
c)
Volume of gas and water temperature
d)
Volume of gas and mass of yeast
16.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
17.
What is the general order of the steps of the scientific methods:
a)
question, experiment, hypothesis, analyze, results, conclusion, communicate results.
b)
question, hypothesis, experiment, analyze results, conclusion, communicate results
c)
question, hypothesis, experiment, analyze results, communicate results, conclusion
d)
all of the above
18.

Which observation is QUALITATIVE?

a)

There are 24 students in the class.

b)

It is hot outside.

c)

95% of the class enjoys ice cream

d)

There are 2 chalkboards in Miss Donato's classroom.

19.

Which observation is QUANTITATIVE?

a)

The chalkboard is green.

b)

The first bubble popped the earliest.

c)

Miss Donato's cat, Snowball, is 18 years old.

d)

The snake's tank is larger than the bearded dragon's tank.

20.

Observation, Inference, Hypothesis, or Prediction?


"The fish are floating at the top of the fish tank."

a)

Observation

b)

Inference

c)

Hypothesis

d)

Prediction

21.

Observation, Inference, Hypothesis, or Prediction?


"If fish are in water that contains at least 4 mg/L or oxygen then they can survive."

a)

Observation

b)

Inference

c)

Hypothesis

d)

Prediction

22.

Observation, Inference, Hypothesis, or Prediction?


"There isn't enough oxygen in the water."

a)

Observation

b)

Inference

c)

Hypothesis

d)

Prediction

23.
When you use five or more of your senses to take in information, you are
a)
observing
b)
classifying
c)
inferring
d)
communicating
24.
Billy wants to know which of his pet gerbils can run the fastest. What is the best way for you to figure this out?
a)
He should observe his pet gerbils while they are sleeping.
b)
He should ask his friend to guess which one is fastest.
c)
He should conduct an experiment and time his pet gerbils running. 
d)
He should measure the length of his gerbils tails.
25.
There is usually no difference between an observation and an inference. 
a)
True
b)
False
26.
Katelyn wants to find out which flavor of sno cones melts the fastest.  How can she find out the answer to this question?
a)
Eat one scoop of each flavor of sno cone.
b)
Microwave different flavors of sno cones and drink them after they are melted.
c)
Measure how long it takes to melt one sno cone of each different flavor.
d)
Measure how long it takes one red sno cone to melt.
27.

Students hypothesized that the height of a ramp which a car rolls down will affect the time it takes the car to travel one meter. Which of the following would be a necessary part of their investigation of this hypothesis?

a)

Adding mass to the car for each trial

b)

Doing the experiment on a sunny day

c)

Changing the surface on which the car rolls

d)

Using ramps of different heights

28.
The test tubes in the image were left at room temperature for a week to see if algae would grow. Which of the following is the constant in the experiment?
a)
the amount of algae present
b)
)the temperature of the test tube's contents
c)
the amount of chlorine present
d)
the ratio of algae to chlorine
29.
A hypothesis must be:
 
a)
proven correct
b)
 testable
c)
 observed
d)
 experimental
30.
If a theory is challenged by new evidence, which of the following could occur?
a)
 the theory could be altered
b)
 the theory is accepted, not the evidence
c)
 the evidence is wrong
d)
 a vote is taken on whether to accept the new evidence
31.

A Law explains the:

a)

"why" it happened

b)

"what" happened

c)

"when" it happened

d)

"where" it happened

32.

Which sentence best describes a scientific theory?

a)

It can never change.

b)

It should change every time it is tested.

c)

It is well-tested and explains a wide range of observations.

d)

It can be proven all the time.

33.

A student wanted to know if chlorine would stop algae from growing in water. The test tubes below were left at room temperature for a week to see if algae would grow. Which of the test tubes is the control?

a)

A

b)

B

c)

C

d)

D

34.
Scientists test their hypothesis in which step of the scientific method?
a)
recording and analyzing data
b)
gathering information
c)
performing the experiment
d)
stating the problem
35.

Which type of graph would best show data that changes over time?

a)

Line graph

b)

Bar graph

c)

Pic chart

d)

Scatter plot

36.
Which statement is an inference about this picture?
a)
The van is tan.
b)
The  van ran into KFC. 
c)
The driver was hungry. 
d)
Red and white are part of the KFC building. 
37.

Use the tally chart. What is a conclusion you can draw from the data?

a)

Soccer is fun.

b)

The class likes Basketball best.

c)

Ice Hockey is not a common sport.

d)

There more girls in the class.

38.

Isaac Newton (1642 – 1727) is considered one of the greatest scientists to ever have lived. He discovered principles on motion and gravity that are still valid today. His principles, along with Johannes Kepler's study of planetary motion, finally lay to rest the belief that the Earth was the center of the solar system (geocentric model).


When scientists observe a certain principle in nature happening every time, without exception, under the same circumstances, it is called a ______________.

a)

scientific theory

b)

scientific law

c)

experiment

d)

hypothesis

39.

Scientific knowledge is gathered in all of these ways except ______________.

a)

scientific experiments

b)

assumptions

c)

gathering historical data

d)

observations of the natural world

40.

This part of the experiment serves as a basis of comparison. The independent variable being tested is not included in this group.

a)

experimental group

b)

control group

c)

data

d)

variables

41.
Every hypothesis begins with what word?
a)
Does
b)
If
c)
Which
d)
Then
42.
Billy wants to know which of his pet gerbils can run the fastest. What is the best way for you to figure this out?
a)
He should observe his pet gerbils while they are sleeping.
b)
He should ask his friend to guess which one is fastest.
c)
He should conduct an experiment and time his pet gerbils running. 
d)
He should measure the length of his gerbils tails.
43.
Which statement is a qualitative observation about your teacher?
a)
She is wearing two earrings.
b)
She is 5 feet 7 inches tall.
c)
She has brown, curly hair.
d)
She has two necklaces. 
44.
Which statement about your school is a quantitative observation?
a)
There are floors covered in tiles.
b)
There are thirty-six classrooms.
c)
The playground has brown mulch and green grass.
d)
There are bathrooms and sinks in each room.
45.

Which property of vinegar can you observe through sense alone?

a)

has a sour, acidic taste

b)

has a pH greater than that of pure water

c)

has a density greater than that of pure water

d)

conducts an electrical current when dissolved in water

46.
The scientific method is used in everyday life to acquire/get information.
a)
True
b)
False
47.

A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?

a)

If plants are placed in direct sunlight, then they will grow more green leaves.

b)

If plants are places in bright light, then they will grow more green leaves than in dim light.

c)

If plants are place in clay pots, then they will grow more green leaves than plastic pots.

d)

If plants are in warmer temperatures, then they will grow more green leaves.

48.

What is being kept constant?

a)

amount of fertilizer

b)

amount of water

c)

height

49.
Which statement is an observation?
a)
That house is empty because there are no lights on. 
b)
Her hair is brown. 
c)
Her hair is brown because she dyed it. 
d)
Her hair has not been cut in two years. 
50.
A series of steps used by scientists to solve a problem or answer a question. 
a)
scientific method
b)
recipe
c)
data collection
d)
metric system
51.

Isaac wants to find out which cat food his cat likes best. What variable could he use in his investigation?

a)

type of cat food

b)

where he feeds his cat

c)

amount of food

d)

when he feeds his cat

52.

Ted wants to find out how cold a freezer needs to be to make fruit popsicles. He designs an experiment by making a large batch of strawberry fruit mix and putting them in popsicle molds. He places each popsicle mold in a different freezer set at a different temperature for the same amount of time. What is the variable in his investigation?

a)

the people who are tasting them

b)

the temperatures of the freezers

c)

type of fruit popsicle

d)

the amount of time the popsicles are in the freezer

53.

Why should scientists base their investigation on observations and data instead of opinions?

a)

no one cares

b)

because they want to

c)

opinions are better

d)

Opinions are not facts

54.
If plants are exposed to sunlight, then they will grow taller.
What part of the scientific method is this an example of?
a)
Procedure
b)
Hypothesis
c)
Question
d)
Results

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