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Scientific Method
Test Description: Introduction to Scientific Method
Instructions: Answer all questions to get your test result.
1) The ball was a measured mass of 113 grams. This statement is
A
inference
B
explanation
C
observation
D
prediction
2) Jacob investigated chemical reaction by recording the color, smell and release of bubbles. What type of evidence did Jared use?
A
quantitative observation
B
measurement
C
qualitative observation
D
calculation
3) Which of these statements is a hypothesis?
A
Many infectious diseases are caused by bacteria.
B
If I floss my teeth daily then I should get less cavities than someone who does not floss his teeth.
C
Flossing has been proven to reduce cavities in children's teeth.
D
Generally anything that removes bacteria from your mouth is a good thing.
4) Two students think that winter thunderstorms are always followed by snow. How could they test their hypothesis?
A
Download a video on thunderstorms to watch.
B
Analyze winter weather data for the past five years.
C
Look at weather data for the past week.
D
Measure the snowfall after the first thunderstorm.
5) A student finishes her lab report saying. The mean average temperature in Louisville in June is 82 degrees. This statement is
A
an opinion
B
a hypothesis
C
a prediction
D
a conclusion
6) Jenna flips a coin 10 times. Seven times it landed on heads and three times it landed on tails. Jenna concludes that coins always land on heads more than tails. Jenna might be wrong because
A
Her sample size is too small to be valid.
B
She did not state a hypothesis.
C
It violates Newton's third law of motion.
D
She should only flip the coin twice.
7) Students were investigating cleaners. They cleaned 5 desks in the classroom with a different brand of cleaner. One desk was not cleaned at all. What is the control for this experiment?
A
the amount of time between cleaning the desks and testing for bacteria
B
The desk that was not cleaned.
C
The desk that had the most bacteria.
D
the 5 different brand of cleaners.
8) Students shoot a marble across a spring with a spring loader plunger. They use a different amount of force each time. They measure how far the marble rolls.What is the dependent variable?
A
the amount of friction from the floor
B
how far the marble rolls.
C
the mass of the marble
D
the amount of force in the spring
9) A student wants to see if different colored boxes are the same temperature when placed in the sun. What is the dependent variable?
A
the number of trials
B
the color of the boxes
C
the size of the boxes
D
the temperature of the boxes
10) A gardener wants to know if fertilizer will make his roses grow taller. Which plant would be the CONTROL in this experiment?
A
a rose plant that gets water and sunlight but NO fertilizer
B
a rose plant that gets water and fertilizer but is placed in a closet with no light.
C
a rose plant that gets sunlight anf fertilizer but no water.
D
a rose plant that get water, sunlight, and fertilizer
11) On the first trial a student rolls a car down a ramp and measures how far it rolls. On the second trial he doubled the height of the ramp and adds sandpaper to give it more friction. Why is this experiment invalid?
A
The student did not know how to calculate speed.
B
The experiment does not have a control.
C
The experiment tested more than one variable.
D
The student should have stopped after the first trial.
12) A student want to find a plant that will survive in a hot, dry climate. Shee plants four different plants in the desrt and measures their growth each week. What is the independent variable?
A
the amount of sunlight
B
the height of the plant
C
the type of plant
D
the amount of water
13) After performing an experiment, what should a scientist do to make sure his findings are correct?
A
Change a different variable and see if he gets the same result.
B
Ignore any results that don't match his hypthesis.
C
Make sure the experimented can be repeated with the same results.
14) A student wants to discover how much water is needed for a potato plant to grow. What is the independent variable?
A
the temperature
B
the amount of sunlight
C
the amount of water each plant receives
D
the type of soil
15) A frog was hungry. It saw a green bug. I bet that bug will taste good, thought the frog. With a flick of its tongue the frog ate the bug. Yuck! said thee frog. That bug tastes gross. What was the frog's hypothesis?
A
The frog was hungry.
B
The frog ate the bug.
C
That bug tastes gross.
D
I bet that bug will taste good.
16) A well-designed experiment should have a hypothesis.
A
true
B
false
17) Which statement about the kittens is an inference?
A
The kittens have fur.
B
The kittens are related.
C
The kittens are in a field of yellow flowers.
D
The kittens have many colors.
18) A frog was hungry. It saw a green bug. I bet that bug will taste good, thought the frog. With a flick of its tongue the frog ate the bug. Yuck! said thee frog. That bug tastes gross.What was the frog's problem?
A
The frog was hungry.
B
The bug tasted yucky.
C
That bug will taste good.
19) A frog was hungry. It saw a green bug. I bet that bug will taste good, thought the frog. With a flick of its tongue the frog ate the bug. Yuck! said thee frog. That bug tastes gross. What was the test?
A
I bet that bug will taste good.
B
The bug tasted gross.
C
The frog ate the bug.
D
The frog was hungry.
20) A frog was hungry. It saw a green bug. I bet that bug will taste good, thought the frog. With a flick of its tongue the frog ate the bug. Yuck! said thee frog. That bug tastes gross. What is the conclusion?
A
I bet that bug will taste good.
B
The bug tasted yucky.
C
The frog was hungry.
D
The frog ate the bug.
*select an answer for all questions
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