Read & React
Mini Mysteries
Prove It
Graphing Analysis Zone
Data in Motion
100
A student tests whether sunlinght affects plant growth by placing plants in different light conditions and measuring height.
What is the Dependent Variable
Height of the plant
100
A researcher tests how flower color affects how often bees visit. She places different colored flowers in a field and records the number of bee visits to each color over several days.
What is the dependent variable
Bee visits
100
A student studies how moisture levels affect frog activity. She changes the humidity in a tank and records how many frogs are active each hour.
What is the dependent variable
Frog activity
100
What happens to # of songs as the Noise Level goes from 20 dB to 80 dB
Decreases
100
What is the dependent variable
# of fish alive
200
A student tests whether sunlight affects plant growth by placing plants in different light conditions and measuring height.
What is the Independent Variable
Light Conditions
200
A student tests whether the amount of food affects how much a hamster grows by giving different amounts of food and measuring the hamster's weight.
What is the independent variable
Amount of food
200
A student studies how moisture levels affect frog activity. She changes the humidity in a tank and records how many frogs are active each hour.
What is the independent variable
amount of moisture
200
What is the independent variable
Amount of food
200
What is the independent variable
% salinity
300
A scientist observes that penguins huddle closer together when temperatures drop. She records the temperature each day and counts how many penguins are in each huddle over two weeks.
What is the independent and dependent variable
Independent- temperature
Dependent- How many penguins are in each huddle
300
A researcher tests how flower color affects how often bees visit. She places different colored flowers in a field and records the number of bee visits to each color over several days.
How could this experiment be improved
Longer amount of time
How long is the data being recorded- all day? hours
what bees?- All bees? - same bee or different bee- mark the bees
300
A student studies how moisture levels affect frog activity. She changes the humidity in a tank and records how many frogs are active each hour.
How could this study be improved
Increase sample size
Longer time frame
300
What is the dependent variable
# of ants
300
What is the independent and dependent variable?
Independent Variable- Temperature
Dependent Variable- Speed
400
A scientist observes that elephants drink more water on hotter days. She records the temperature each day and measures the amount of water consumed by a group of elephants over two weeks.
What is the independent and dependent variable
Independent- Temperature
Dependent- amount of water consumed
400
A student studies how temperature affects snake movement. She changes the temperature in an enclosure and records how far the snake moves in 10 minutes.
What is the independent and dependent variable
Independent - temperature
dependent- snake movement
400
A student observes that fish open and close their mouths more frequently in warmer water. She changes the water temperature in a tank and records how many times the fish open their mouths in one minute.
What is the independent and dependent variable
Independent variable- water temperature
Dependent- How many times the fish open and close their mouth in one minute
400
As the amount of food increases what happens to the number of ants
Increases
400
As salinity increases, what happens to the number of fish alive?
decrease
500
A scientist observes that elephants drink more water on hotter days. She records the temperature each day and measures the amount of water consumed by a group of elephants over two weeks.
How could this experiment be improved
Record data for more than two weeks
Use the same group of elephants
Control other factors like elephant activity level, age, diet, humidity, shade, and access to water.
Measure water consumption in a consistent way at the same time each day.
Repeat with more elephant groups
500
A student studies how temperature affects snake movement. She changes the temperature in an enclosure and records how far the snake moves in 10 minutes.
How could this experiment be improved
more than one snake
different snake species
500
A student observes that fish open and close their mouths more frequently in warmer water. She changes the water temperature in a tank and records how many times the fish open their mouths in one minute.
How could you improve this experiment
More than one fish
more than one data collector
record
500
What is the Independent and Dependent Variable
Independent Variable- Noise Level
Dependent Variable # of songs
500
Predict what would happen at 6% salinity
There would be no fish alive