Year 7 Cycle 1 Working Scientifically Unit Knowledge Checker

what does this safety symbol mean?

• may cause cancer

• can destroy your skin

• corrosive

• caution

should a Bunsen burner air hole be open or closed before lighting?

• open

• closed

A variable you keep the same each time you carry out an experiment is called the...

• Independent variable

• Dependent variable

• Control variable

A variable you change each time you carry out an experiment is called the...

• Independent variable

• Dependent variable

• Control variable

The instructions for how to carry out an experiment are called the...

• Method

• Recipe

• Guidelines

• Itinerary

You have carried out a fair test if...

• All your results support your hypothesis

• You repeat each observation three times and calculate a mean average

• Someone else repeats your experiment and gets the same result

• Your only change one variable during your experiment

?

• High Accuracy & High Precision
• High Accuracy & Low Precision
• Low Accuracy & High Precision
• Low Accuracy & Low Precision

Tags

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

How close a measurement is to the accepted value is called..

• Accuracy

• Precision

• Significant

• Estimate

Measurements that are repeated and close to each other can be defined as:

• accurate
• accurate and precise
• precise
• estimated

Romy's measurements: 6.02 m, 6. 04 m, 6.03 m
Actual Value: 6.02 m
How would you define her measurements?

• accurate and precise
• accurate 
• precise
• neither