Variables and Experiments

The variable that I change is the ...

• independent variable
• dependent variable
• control variable
• uncontrolled variable

The variable that I measure is the ...

• independent variable
• dependent variable
• control variable
• uncontrolled variable

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-2

A variable that I keep the same is the ...

• independent variable
• dependent variable
• control variable
• uncontrolled variable

In an experiment to find out how the temperature affects the bounce height of a ball, the independent variable is ...

• temperature
• bounce height
• the thermometer
• the ruler

Tags

NGSS.MS-PS3-4

In an experiment to find out how the temperature affects the bounce height of a ball, the dependent variable is ...

• temperature
• bounce height
• the thermometer
• the ruler

In an experiment to find out how the temperature affects the bounce height of a ball, a control variable is ...

• temperature
• the type of ball
• the thermometer
• the ruler

A student wants to find the mass of a small coin. Which of these is a method to obtain a more accurate measurement.

• Find the total mass of 20 coins and divide by 20.
• Measure the mass of 1 coin 3 times and find the average
• Measure the mass of the coin 5 times and plot a graph
• Measure the mass of a container and then the container plus coin.

A student is trying to find how long it takes a ball to fall 2 m using a stopwatch. To obtain an accurate result the student could ....

• drop 10 different balls and average the times
• drop the same ball 3 times and find an average
• drop the same ball 3 times and use the shortest time
• drop the ball from 4 m and divide the time by 2

To measure the weight of an apple a student could use a...

• balance
• newton meter
• ruler
• stopwatch

To measure the volume of a pebble a student could use a...

• balance
• measuring cylinder
• ruler
• stopwatch