Week #1 Quiz Practice (Measurement, Sig Figs, Unit Conversions)

What is the unit used to measure temperature in the International System (SI)?

• Pound

• Liter

• Celsius

• Yard

Answer explanation

The unit used to measure temperature in the International System (SI) is Celsius. It is widely used in scientific contexts, unlike the other options which measure weight (Pound), volume (Liter), or distance (Yard).

Which of the following pairs correctly matches a unit with what it measures?

• Yard - Mass

• Liter - Capacity

• Inch - Temperature

• Pound - Length

Answer explanation

The correct pair is 'Liter - Capacity' because a liter measures the volume of a substance, which is a capacity measurement. The other pairs incorrectly match units with what they measure.

Explain why it is important to use the correct unit of measurement for mass, length, capacity, and temperature in everyday life.

• It helps ensure accuracy and understanding in communication and daily tasks.

• It makes things more complicated.

• It is only important for scientists.

• It is not important at all.

Answer explanation

Using the correct unit of measurement is crucial for accuracy and clarity in communication. It ensures that everyone understands quantities correctly, which is essential for daily tasks like cooking, shopping, and following instructions.

Tags

NGSS.MS-PS3-4

What is the name of the measurement system used by most of the world for measuring?

• Imperial System

• Metric System

• Customary System

• British System

Answer explanation

The Metric System is the standard measurement system used by most countries worldwide, facilitating global communication and trade. In contrast, the Imperial, Customary, and British Systems are primarily used in specific regions like the USA and UK.

What does "SI" stand for in the context of measurement units?

• Standard International

• System of Inches

• International System of Units

• Scientific Index

Answer explanation

"SI" stands for "International System of Units," which is the standard system used globally for measurement. The other options do not accurately represent this widely accepted system.

Tags

NGSS.MS-PS3-1

Which of the following is the SI unit for mass?

• Meter (m)

• Second (s)

• Gram (g)

• Liter (L)

Answer explanation

The SI unit for mass is the kilogram (kg), but the gram (g) is a commonly used subunit. Therefore, among the options given, the correct answer is gram (g), as it is the standard unit for measuring mass.

If you are measuring the length of an object in Physics class, which unit should you use according to the SI system?

• Gram (g)

• Meter (m)

• Second (s)

• Pound (lb)

Answer explanation

In the SI system, the meter (m) is the standard unit for measuring length. Other options like gram (g) and pound (lb) are units of mass, while second (s) measures time. Therefore, meter (m) is the correct choice.

Why is it important to use SI units in Physics?

• Because they are easier to spell

• Because they are used only in the United States

• Because they provide a standard system for scientists worldwide

• Because they are older than other systems

Answer explanation

Using SI units is crucial because they provide a standard system that is universally recognized by scientists around the world, facilitating clear communication and consistency in scientific research and data.

Which of the following best describes qualitative measurements?

• Measurements or observations without numbers

• Measurements or observations using numbers

• Measurements involving only time

• Measurements involving only weight

Answer explanation

Qualitative measurements refer to observations that describe qualities or characteristics without using numbers. Therefore, the correct choice is 'Measurements or observations without numbers'.

Which of the following is an example of a quantitative measurement?

• Bright

• 3.5m

• Small

• Dim

Answer explanation

The correct choice, 3.5m, is a quantitative measurement as it provides a specific numerical value indicating length. In contrast, 'Bright', 'Small', and 'Dim' are qualitative descriptors without numerical value.

Tags

NGSS.MS-PS3-4