Lab Practical Review

This variable in an experiment is the one being changed by the scientist. 

• dependent variable
• independent variable
• control variable
• control group

Should experiments be repeated over and over to see if the results are the same each time?

• yes
• no

The summary at the end of an experiment that explains the results. 

• conclusion
• procedures
• materials
• responding variable

Mr. S. sets up an experiment to see how toy cars with different masses affects the distance they roll down a ramp.  Identify the independent variable.

• distance traveled by the cars
• height of the ramp
• mass of the car
• number of cars

Mr. S. sets up an experiment to see how toy cars with different masses affects the distance they roll down a ramp.  Identify the dependent variable.

• height of the ramp
•  distance traveled by the cars
• mass of the car
• number of cars

A student is planning an experiment to find out how the height from which he drops a ball affects how high the ball bounces. The dependent variable is the _____.

• Diameter of the ball
• Force acting on the ball
• Height that the ball bounces
• Height from which the ball is dropped

A possible explanation to a problem or answer to a question

• data

• theory

• hypothesis

• fact

Which is NOT a step for reading a graduated cylinder properly?

• Make sure the cylinder sits in the stand vertically.

• Be sure to hold it up to eye-level when reading.

• Read the liquid's volume by the bottom of the meniscus.

What does a graduated cylinder measure?

• mass

• volume

• length/distance

• time

Which of the following units is volume measured in?

• mL and L

• mm, cm, and m

• g

• sec, min, hr