Reading Nat Sci Instruments

Front

What is an independent variable in an experiment?

Back

The independent variable is the one that is deliberately set or changed by the scientist to observe its effect on the dependent variable.

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the variable that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is a confounding variable?

Back

A confounding variable is an outside influence that changes the effect of a dependent and independent variable.

Front

What is a constant variable?

Back

A constant variable is a factor that remains the same throughout an experiment to ensure that the results are valid.

Front

What is the smallest division of a graduated cylinder?

Back

The smallest division of a graduated cylinder is the smallest increment that can be accurately read on the scale, often 1 mL, 0.1 mL, or 0.2 mL depending on the cylinder.

Front

How do you measure the volume of an irregular object?

Back

You can measure the volume of an irregular object using a graduated cylinder by the water displacement method.

Front

What is the purpose of using a graduated cylinder?

Back

A graduated cylinder is used to measure the volume of liquids accurately.

Front

What is the significance of the meniscus in liquid measurement?

Back

The meniscus is the curve at the surface of a liquid in a container, and it is important to read the measurement at the bottom of the meniscus for accuracy.

Front

What is the formula for calculating density?

Back

Density is calculated using the formula: Density = Mass/Volume.

Front

What is the role of a control group in an experiment?

Back

A control group is used as a standard for comparison in an experiment, where the independent variable is not applied.