Understanding Physical Quantities

What is a scalar quantity?

• A scalar quantity has both magnitude and direction.

• A scalar quantity is a quantity that has only magnitude.

• A scalar quantity is a type of vector.

• A scalar quantity is defined by its position in space.

What is a vector quantity?

• A vector quantity only has magnitude.

• A vector quantity is a scalar quantity.

• A vector quantity is a quantity that has no direction.

• A vector quantity is a quantity that has both magnitude and direction.

Is temperature a scalar or vector quantity?

• None of the above

• Vector

• Scalar

• Both scalar and vector

Is force a scalar or vector quantity?

• Constant quantity

• Scalar quantity

• Magnitude only

• Vector quantity

What are fundamental quantities?

• Fundamental quantities are basic physical quantities that are not derived from other quantities.

• Fundamental quantities are derived from other physical quantities.

• Fundamental quantities are only applicable in theoretical physics.

• Fundamental quantities are measurements that can be expressed in terms of other quantities.

What are derived quantities?

• Fundamental quantities are derived from derived quantities.

• Derived quantities are quantities that are derived from fundamental quantities through mathematical relationships.

• Derived quantities are always measured in units of time.

• Derived quantities cannot be expressed mathematically.

Can you name a fundamental quantity?

• Temperature

• Length

• Mass

• Time

Can you name a derived quantity?

• Acceleration

• Force

• Velocity

• Mass

What unit is used to measure length?

• liters

• meters, centimeters, inches, feet

• grams

• seconds

What unit is used to measure mass?

• seconds

• meters

• kilograms

• liters