PS Unit 1

What is a Scientific Law?

• A statement about nature that seems to always be true

• Scientists’ expectations change the outcome

• A factor that does not change

• Represents an idea, event, or object to help people understand it

What is a Model?

• Represents an idea, event, or object to help people understand it

• A factor that does not change

• Scientists’ expectations change the outcome

• An exact quantity that people agree to use

What is Bias?

• Scientists’ expectations change the outcome

• A factor that does not change

• Represents an idea, event, or object to help people understand it

• An exact quantity that people agree to use

What is a Constant?

• A factor that does not change

• Represents an idea, event, or object to help people understand it

• Scientists’ expectations change the outcome

• An exact quantity that people agree to use

True or False: For a measurement to make sense, it must include a number and a unit.

• True

• False

What is the second step in the scientific method?

• Form a hypothesis

• Conduct an experiment

• Make an observation

• Analyze data

What is the density of a rock with a mass of 250 grams and a volume of 50 cm³?

• 5 g/cm³

• 0.2 g/cm³

• 50 g/cm³

• 250 g/cm³

What is the formula for volume?

• Length × Width × Height

• Length + Width + Height

• Length / Width / Height

• Length × Width + Height

Which step involves sharing the findings in the scientific method?

• Communicate results

• Analyze data

• Form a hypothesis

• Conduct an experiment

In an experiment to see how the amount of sunlight affects plant growth, what is the independent variable?

• Height of the plant

• Amount of sunlight

• Type of plant

• Amount of water

Tags

NGSS.MS-LS1-5