Grade 8 General Science Note

What is measurement in science?

Comparing a quantity to a standard using a numerical value and a unit.

What is a cubit?

The measurement from the elbow to the tip of the middle finger.

What does SI stand for in scientific measurements?

International System of Units.

What is the SI unit for length?

Meter (m).

Define accuracy in scientific measurements.

Closeness to the true value.

What does precision refer to in measurements?

Consistency among repeated measurements.

What does the prefix 'kilo' mean?

1,000.

What is the purpose of the scientific method?

To learn about the world through observation, inquiry, and testing hypotheses.

List the first step of the scientific method.

Ask Questions.

What instrument is used to measure mass?

Balances, such as spring or digital balances.

How do you convert 200 meters to kilometers?

200 / 1000 = 0.2 km.

What is a hypothesis in the context of the scientific method?

A logical, testable explanation of observations, including predictions.

Define the term 'derived quantities'.

Quantities formed by combining fundamental quantities.

What is a jog measurement used for?

To measure liquids.

How many grams are in 1 kilogram?

1 kg = 1,000 g.

What does the prefix 'milli' signify?

0.001.

What are fundamental quantities?

Quantities that cannot be derived.

What tool is commonly used for measuring temperature?

Thermometers, either analog or digital.