Scientific method

If you do not understand a direction or part of a lab procedure, you should ...

• skip it and go to the next part.

• try several methods until something works.

• figure it out as you do the lab.

• ask the teacher before proceding.

The next image is a graduated cylinder

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What is the volume of liquid shown in ml?

• 25 ml

• 24 ml

• 20 ml

• 26 ml

look at the picture, and answer the question

• 10 ml

• 15 ml

• 20 ml

• 140 ml

To find an object's density ...

• divide its volume by its mass

• subtract its mass from its volume

• subtract its volume from its mass

• divide its mass by its volume

Oil floats on top of water because...

• it is less dense than water

• it has less volume than water

• it is heavier than water

• it has more volume than water

A student needs to determine the density of an unknown rock sample by dropping the rock into a graduated cylinder containing water. The original volume in the graduated cylinder is 23 ml. The student then drops the rock sample into the graduated cylinder and determines the new volume to be 30 ml. If the mass of the rock is determined to be 21 grams, what is the density of this sample?

• 3g/ml

• 0.7g/ml

• 7g/ml

• 0.3g/ml

A seal must have chased the penguin out the water is a ...

• qualitative observation

• Inference

• quantitative observation

• law

You should only have one independent variable in a well set-up experiment

• True

• False

Tags

NGSS.MS-PS2-2

A good hypothesis is written as: "If independent variable, ___ dependent variable because of XYZ"