Measurement and Forces Quiz

What is the unit of measurement for mass?

• Newtons (N)

• Kilograms (kg)

• Meters (m)

• Joules (J)

What is the force caused by the Earth's gravitational pull on a mass called?

• Mass

• Weight

• Volume

• Density

Which equation is used to calculate weight on Earth?

• W = mg

• W = m/g

• W = g/m

• W = m + g

What is the unit of measurement for weight?

• Kilograms (kg)

• Newtons (N)

• Liters (L)

• Pascals (Pa)

What is the approximate value of gravitational field strength (g) on Earth?

• 5 N/kg

• 10 N/kg

• 15 N/kg

• 20 N/kg

What is one way to reduce friction according to the document?

• Increasing surface contact

• Using lubrication

• Adding more weight

• Increasing speed

How does streamlining reduce friction?

• By making surfaces rough

• By increasing air resistance

• By shaping objects to be smooth and pointed

• By adding more surface area

What is a method to make a machine more efficient?

• Increasing the amount of energy used

• Reducing the amount of energy wasted due to friction

• Adding more components

• Increasing the size of the machine

Which of the following can help make a vehicle more efficient?

• Increasing the weight of the vehicle

• Using streamlining, lubrication, and bearings/rollers

• Adding more friction

• Decreasing the speed of the vehicle

What is a force described as?

• A push or pull on an object

• A type of energy

• A form of matter

• A chemical reaction