SI: Variables
In an experiment to measure how different types of soil affect tulip growth, you fill five identical pots with different types of soil and place a tulip bulb in each. The variable in the experiment would be -
A. The amount of sunlight
B. The tulip
C. The soil
D. The flower pot
What is C. The soil
An observation is -
A. a summary of your results.
B. a test to see if a theory is correct.
C. an educated guess that can be tested.
D. A clear description using one or more of the senses to identify an object or an event.
What is D. A clear description using one or more of the senses to identify an object or an event.
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 -
A. a conclusion
B. a fact
C. an observation
D. a prediction
What is D. a prediction
An if/then statement made before an experiment is called-
a) a hypothesis
b) a prediction
c) a conclusion
d) a measurement
What is a) a hypothesis
If I wanted to travel to a terrestrial planet, which planet would I be going to?
F. Saturn
G. Jupiter
H. Neptune
J. Mercury
What is J. Mercury
A dependent variable is –
a) the thing that you change on purpose
b) the final result
c) the thing that reacts
d) the thing that you hold constant
What is c) the thing that reacts
If you are given a picture and asked to make an observation, you must choose the answer that includes only -
A. things that someone tells you about the picture
B. things you know about the picture
C. things that you can actually see with your own eyes
D. things that you can infer about the picture
What is C. things that you can actually see with your own eyes
Paul put oil and water in a cup and noticed that the oil floated on top of the water. He decided to write a conclusion based on what he observed. The best conclusion would be -
A. The oil polluted the water
B. Oil has a greater density than water
C. Water has a greater density than oil
D. Water and oil need to be shaken up so it will mix better
What is B. Oil has a greater density than water
A group of students was preparing an experiment to see where ice cubes melt the fastest in the classroom.
Mindy: “If I put the ice cube in the sun, then it will melt the fastest.”
Juniper: “The ice cube is very cold to the touch.”
Roger: “I think it will melt fastest in my hands.”
Which students gave a hypothesis?
What is Mindy
Who discovered that lightning was a form of electricity?
F. Thomas Edison
G. George Washington
H. Ben Franklin
J. Ben Edison
What is H. Ben Franklin
Sandy is conducting an investigation to find out which food his dog likes best. Which is the manipulated variable in his investigation?
a) The color of his dog’s food dish
b) The kind of food he gives his dog
c) The amount of food he gives his dog
d) The time of day he feeds his dog
What is b) The kind of food he gives his dog
Sue had a dog that barked very loud every morning. She started putting dog food on her back porch at night and noticed the dog stopped barking each morning. This is an example of what part of the scientific process?
A. a hypothesis
B. an observation
C. a conclusion
D. the question
What is B. an observation
Which metric measurement would be used to measure a pencil?
F. centimeters
G. feet
H. meters
J. grams
What is F. centimeters
The hypothesis is the step of the scientific method that is a/an -
A. independent variable
B. constant
C. collection of data
D. statement to be tested
What is D. statement to be tested
Who believed in an earth-centered model of our solar system?
F. Aristotle and Galileo
G. Copernicus and Ptolemy
H. Galileo and Copernicus
J. Ptolemy and Aristotle
What is H. Galileo and Copernicus
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
What is D. spot from which players
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 -
A. an observation
B. an inference
C. a prediction
D. a conclusion
What is A. an observation
Joe joined the swim team at school. His coach made the following statement, “If you practice every day, then you will win the swim tournament.” This is an example of which part of the scientific process?
F. an observation
G. a hypothesis
H. a conclusion
J. the procedure
What is G. a hypothesis
What is the constant in an experiment?
F. the variables that must stay the same
G. the variable that is changed
H. the statement describing the results
J. the statement to be tested
What is F. the variables that must stay the same
What are the four layers of the Earth?
F. crust, mantle, core, yolk
G. outer mantle, inner mantle, outer core, inner core
H. crust, mantle, outer core, inner core
J. crust, mantle, minerals, core
What is H. crust, mantle, outer core, inner core
In order for an experiment to be considered a fair test, it must -
A. change only 1 variable
B. have all constants changing
C. change all variables
D. change no variables
What is A. change only 1 variable
The weatherman said, “Today, you need to wear lose, cool
clothing.”
Infer: The temperature today will be about...
A. 90 ° F
B. 15 ° F
C. 7° F
D. 38° F
What is A. 90 ° F
Which step of the scientific method gives a testable explanation for something you have observed about a question or a problem?
A. conclusion
B. experiment
C. hypothesis
D. recording of data
What is D. recording of data
Which of the following is an observation about grasshoppers that a science class could have made on their nature walk?
F. The grasshoppers will live longest in a container filled with plants.
G. The grasshoppers are green with long back legs and antennae.
H. The grasshoppers will probably eat more grass than tree leaves.
J. The grasshoppers all hatched from eggs laid the year before.
What is G. The grasshoppers are green with long back legs and antennae.
The teacher decided to take chocolate candy bars to her students at school. Unfortunately, she forgot them in her hot car. It made a terrible mess and all the chocolate melted. What caused the chocolate to melt?
F. kinetic energy
G. potential energy
H. chemical energy
J. solar energy
What is J. solar energy