Variables Investigation 2 (Life Boats)

Vocabulary

100

The maximum volume of fluid that a container can hold

What is capacity?

200

An experiment in which one, and only one variable is changed in order to assess its effect

What is a controlled experiment?

300

The variable(s) held constant throughout an experiment

What are the controlled variables?

400

What is known/planned before an experiment starts

What is the independent variable?

500

What we find out by doing the experiment

What is the dependent variable?

Lifeboat Investigation

100

The dependent variable in our lifeboat investigation.

What was the number of passengers?

200

The independent variable in our lifeboat investigation

What was the capacity of each boat?

300

The controlled variables in our lifeboat investigation (name at least two)

What are the type of cup, the type of passenger (penny), the amount of water

400

The number of passengers in a lifeboat increases when we do this

What happens as we increase the capacity of a boat?

500

A straight line from the origin that lies between our points

What is the line of best fit?

Variable: Independent, Dependent, or Controlled

100

Alexandra tested to see if type of music affects the height a plant grows. 

Plant height is this type of variable

What is the dependent variable?

200

Alexandra tested to see if type of music affects the height a plant grows. 

Plant type, amount of sunlight, amount of water, are all this type of variable.

What is the controlled variable?

300

Lili designed a controlled experiment to figure out the effect of boat design on the distance it would travel in 15 seconds. She changed the front end shape of the boat. (Drawing). She kept the capacity the same for every boat.

Name the dependent variable.

What is the distance the boat traveled in 15 seconds?

400

Lili designed a controlled experiment to figure out the effect of boat design on the distance it would travel in 15 seconds. She changed the front end shape of the boat. (Drawing). She kept the capacity the same for every boat.

Name the independent variable.

What is the shape of the front end of the boats?

500

Lili designed a controlled experiment to figure out the effect of boat design on the distance it would travel in 15 seconds. She changed the front end shape of the boat. (Drawing). She kept the capacity the same for every boat.

Name at least two controlled variables.

What are the

-capacity of the boat

-amount of time (15 seconds)

-starting position

-amount of water

-force pushing the boat.