Understanding Metric System & Scientific Method

What is the base unit for length in the metric system?

• Meter

• Kilometer

• Gram

• Liter

Answer explanation

The base unit for length in the metric system is the meter. It is the standard unit used to measure distance, while kilometers measure larger distances, grams measure mass, and liters measure volume.

Which prefix means one thousandth?

• Centi

• Deci

• Milli

• Kilo

Answer explanation

The prefix 'milli' means one thousandth (1/1000). In contrast, 'centi' means one hundredth (1/100), 'deci' means one tenth (1/10), and 'kilo' means one thousand (1000). Therefore, 'milli' is the correct answer.

What does the prefix 'kilo' mean?

• 10

• 1000

• 100

• 0.1

Answer explanation

The prefix 'kilo' means 1000. It is commonly used in measurements, such as kilometers (1000 meters) and kilograms (1000 grams), indicating a factor of one thousand.

Which of the following is NOT a metric unit of volume?

• Centiliter

• Gallon

• Milliliter

• Liter

Answer explanation

The gallon is not a metric unit of volume; it is an imperial unit. Centiliter, milliliter, and liter are all metric units used to measure volume.

What is the metric prefix for one tenth?

• Hecto

• Milli

• Centi

• Deci

Answer explanation

The metric prefix for one tenth is 'deci'. It represents a factor of 10^-1, making it the correct choice among the options provided. Hecto (100), milli (0.001), and centi (0.01) are incorrect.

Which prefix is used for 100 times the base unit?

• Deca

• Centi

• Kilo

• Hecto

Answer explanation

The prefix 'Hecto' represents 100 times the base unit in the metric system. For example, 1 hectometer equals 100 meters. Other options like Deca (10), Centi (0.01), and Kilo (1000) do not represent 100 times.

What is the base unit for mass in the metric system?

• Meter

• Liter

• Gram

• Kilogram

Answer explanation

The base unit for mass in the metric system is the gram. While the kilogram is commonly used, it is defined as 1000 grams. Therefore, the correct answer is gram.

Which unit prefix is the SMALLEST?

• Kilo

• Hecto

• Centi

• Milli

Answer explanation

The smallest unit prefix among the options is 'Milli', which represents one-thousandth (10^-3). In comparison, 'Centi' is one-hundredth (10^-2), 'Hecto' is one-hundred (10^2), and 'Kilo' is one-thousand (10^3).

1 L = _______ mL

• 1

• 10

• 100

• 1000

Answer explanation

1 liter (L) is equal to 1000 milliliters (mL). This is a standard conversion in the metric system, where 1 L contains 1000 mL, making 1000 the correct answer.

How many centimeters are in a meter?

• 1.0 cm

• 10.0 cm

• 100.0 cm

• 1000.0 cm

• .01 cm

Answer explanation

There are 100 centimeters in a meter. This is a standard conversion in the metric system, where 1 meter equals 100 centimeters.