Show:
Vocab
Swingers
Run for the Lifeboats
Scenarios
Potpourri
100

What is capacity?

Capacity is the amount something holds.

100
How can you make a pendulum go faster?
Make it shorter.
100
How does the size of a boat, or it's capacity, affect the number of passengers it holds.
The bigger it is, the more passengers it holds.
100

If I put more soap in my bathtub then more bubbles will form because soap causes bubbles in the presence of water.

What is the dependent and independent variable?

Dependent Variable: Amount of bubbles

Independent Variable: Amount of soap

100

A 100 cm string swings 8 times. An 80 cm string swings 10 times. How many times do you think a 90 cm string will swing?

9 times. 100 cm is slower and swings 8. 80 cm is faster and swings 10. 90 cm is in between.

200
Which variable is do you choose to change?
The independent variable.
200
What happens when you make a pendulum longer?
It goes slower.
200

What was not part of our standard lifeboat system?

(A) placing pennies in one at a time, (B) making sure the water was calm, (C) stacking the pennies in the middle of the boat, (D)drying the pennies between each trial

 (C) stacking the pennies in the middle of the boat

200

Tori and Corbin want to see which pet food their dogs like best. Tori feeds Dog Chow to her dog and Corbin feeds Dog Biscuits to his dog. What is wrong with this?

The fed two different foods to two different dogs. Only change the food. Keep the dog the same.

200

Finish this statement: As a boat's capacity goes up ...

The amount of passengers goes up too!

300
Which variable depends on what you are testing?
The dependent variable.
300
What happens if you add more weight to a pendulum?
Nothing happens.
300
How could you make your lifeboat sink?
Pile on the pennies to one side, drop them roughly, etc.
300

Josh and Lauren want to see which of their sleds slides the farthest. Josh takes his sled and slides in his backyard. Lauren takes her sled, and slides in her backyard. This is obviously wrong. What variable(s) should they control (keep the same).

They should keep the hill the same (pick a backyard). They should also keep the person the same (weight).

300

True or False: Two-coordinate graphs can be used to predict events.

True

400

In this type of experiment, only ONE variable is changed.

Controlled experiment

400
The longer a pendulum, the _____.
The slower it goes.
400
What was the independent variable in our lifeboats experiment? Hint- what did we choose to change?
The size of the boat.
400

If 5th grade students study for two hours everyday then their grades will increase because studying improves memory for tests.

What is the Independent Variable and Dependent Variable?


Independent Variable: Amount of time spent studying

Dependent Variable: Grades

400

Which of these was not a variable in our pendulum experiments? (A)release position, (B)mass, (C)string length, (D)type of string.

Not a variable: type of string

500
In an experiment, what is a variable?
A variable is something you can change.
500
If Kyle's grandfather clock is running too slow. What can he do to the pendulum inside?
He can shorten it.
500
What was the dependent variable in our lifeboats experiment? Hint- what did we measure?
The passengers.
500

If I spend more time practicing then my chances of winning basketball games will increase.

What is the independent and dependent variable?


Independent Variable: Amount of time spent practicing

Dependent Variable: Increased chance of winning a basketball game


500

How can you make a prediction using a line graph?

Graph your results and draw a line. All of the possible results should be along that line.