Chap 1.3 Scalars and Vectors, Precision and Range

What is a scalar quantity?

• A quantity that has both magnitude and direction

• A quantity that has only magnitude

• A quantity that has only direction

• A quantity that changes with time

Which of the following is an example of a vector quantity?

• Temperature

• Speed

• Force

• Mass

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NGSS.MS-PS2-1

NGSS.MS-PS2-4

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Which instrument would you use to measure the thickness of a pencil?

• Metre rule

• Digital calipers

• Measuring tape

• Spring balance

What is the primary use of a spring balance?

• To measure mass

• To measure length

• To measure weight

• To measure time

Which instrument is most suitable for measuring the mass of a small object with high precision?

• Beam balance

• Electronic balance

• Spring balance

• Compression balance

What is the main difference between a scalar and a vector quantity?

• Scalars have direction, vectors do not

• Vectors have magnitude, scalars do not

• Scalars have magnitude only, vectors have both magnitude and direction

• Scalars change with time, vectors do not

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NGSS.MS-PS3-1

Which of the following instruments would you use to measure time accurately in a laboratory experiment?

• Metre rule

• Stopwatch

• Digital micrometer screw gauge

• Beam balance

What is the range and precision consideration when using a digital micrometer screw gauge?

• Range: 0-1 cm, Precision: 0.1 mm

• Range: 0-25 mm, Precision: 0.01 mm

• Range: 0-100 cm, Precision: 1 mm

• Range: 0-10 m, Precision: 1 cm

Which instrument would you use to measure the length of a football field?

• Digital calipers

• Metre rule

• Measuring tape

• Digital micrometer screw gauge

What is the appropriate instrument to measure the weight of a heavy object?

• Electronic balance

• Compression balance

• Weighing Scale

• Beam balance