Vocabulary
The part of the experiment that is manipulated or changed
independent variable
The first step of The Scientific Method is:
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, same amount of sunlight, and the same amount of liquid. In this investigation, what is the independent variable?
type of liquid
Mr. B set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. Identify the dependent variable.
distance traveled by the ball
A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. What is the constant variable?
The ball used
These protect your eyes from airborne hazards, such as chemicals
Safety Goggles
variable that you measure in an experiment
dependent variable
The second step of The Scientific Method is:
Gather information
CW wanted to find out what soil works best for growing big sweet potato's. He grew them in potting soil, clay, sand and soil he found outside of his house. After one month he harvested the sweet potato's to see which ones were the biggest. What is the independent variable in this experiment?
type of soil being used
Dwight wanted to find out what soil works best for growing juicy beats. He grew them in potting soil, clay, sand and soil he found outside of his house. After one month he harvested the beats and cut into them to see which ones were the juiciest.
juiciness of the beats
Pat performed an investigation to find out under which color of light plants grow best. What variable should be constant?
the color of light received
the amount of light the plant received
nothing needs to be controlled
the amount of light the plant receives
A laboratory instrument used to measure out or transfer small amounts of liquids
Pipette
something that remains the same the entire experiment
constant
The last step of The Scientific Method is:
Share results
Angelina performed an investigation to find out how the amount of salt in water affected the hatching of brine shrimp. What is the independent variable?
the amount of salt
What effect doing studying with music have on student test scores?
Test scores
Lauren wants to know which location in her apartment is best for growing African violets. She has three African violets. She puts one on the balcony, one by the kitchen window, and one on the mantel in the living room. Each plant has the same size pot and the same soil, and Lauren gives
the plant the same amount of water. What is the constant variable? (there are 3)
pot size, soil type, water amount
A device used to determine the volume of liquid
Graduated Cylinder
A series of steps taken to gather knowledge and conduct research in order to come to a conclusion
The Scientific Method
True or False:
Every hypothesis tested will always follow the 6 steps of The Scientific Method in order
False
David performed an investigation to find out how different temperatures affect crystal growth. What is the independent variable?
Temperature
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, same amount of sunlight, and the same amount of liquid. In this investigation, the dependent variable is
Growth of the plant
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What are the constants?
Light and water
What is the first thing a student should do if an accident happens during a science experiment?
Report it to the teacher
A proposed idea that can be tested
Hypothesis
A type of data that is gathered by using your 5 senses
Qualitative Data
Kira wants to test which type of soda creates the biggest foam explosion when adding a Mentos candy. She chose Sprite, Coke, and Mountain Dew. One at a time, she added a single Mentos candy and measured the height of the foam eruption. Mountain Dew created a foam eruption of 7 inches. Coke and Sprite tied at 5 inches. What is her independent variable?
type of soda
Jessie is concerned about how tired his classmates seem. He created a drink that he thinks will boost their energy. He recruits 100 classmates with a history of tiredness. He has 50 of them drink his new special energy drink. The other 50 drink a beverage that looks like the special energy drink, but is just water and food coloring. Both groups were told that they were getting the special drink that would boost energy. After 2 hours, 30 classmates in the first group reported having more energy and 8 classmates in the second group reported having more energy.
What is the dependent variable?
Amount of energy
Mrs. Byle performed an investigation to find out which type of fish food allowed for a more colorful coat for her beta fishes. She gave the same amount of food to each fish. She gave bloodworms to the first one, flakes to the second, and pellets to the third. After one month she assessed their colors. What are the constants?
Amount of food, time
A ventilated enclosure used to trap and exhaust vapors and gases
Fume hood