7th Sci Nos Chp 3 Test

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the actual value. It is calculated using the formula: Percent Error = |(Measured Value - Actual Value)| / Actual Value * 100.

Front

How do you calculate percent error?

Back

To calculate percent error, subtract the actual value from the measured value, take the absolute value of the result, divide by the actual value, and then multiply by 100.

Front

What is the metric abbreviation for milliliter?

Back

mL

Front

What is weight in scientific terms?

Back

Weight is the measure of the force of gravity acting on an object, typically measured in newtons or pounds.

Front

What is the SI unit for mass?

Back

The SI unit for mass is the gram (g).

Front

How should measurements be expressed?

Back

Measurements should be expressed with the appropriate number of significant figures and units, e.g., 9.12 cm.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is the formula for calculating weight?

Back

Weight = Mass x Acceleration due to gravity (W = m x g).

Front

What is the significance of significant figures in measurements?

Back

Significant figures indicate the precision of a measurement, showing which digits are reliable and which are estimates.

Front

What is the metric system?

Back

The metric system is a decimal-based system of measurement used worldwide, based on units such as meters, liters, and grams.