Measurement & SI Units
The SI unit for length.
What is the metre (m)?
A push or pull is called a:
What is a force?
The unit of energy.
What is the joule (J)?
Density is defined as mass per unit:
What is volume?
Write 5000 in scientific notation.
5 × 10³
The instrument used to measure mass.
What is a balance?
The SI unit of force.
What is the Newton (N)?
Energy possessed because of motion.
What is kinetic energy?
The SI unit of density.
What is kg/m³?
Write 0.00045 in scientific notation.
4.5 × 10⁻⁴
The SI unit for temperature.
What is the kelvin (K)?
The force that pulls objects toward Earth.
What is gravity?
The rate at which work is done.
What is power?
A block has a mass of 200 g and volume of 100 cm³. Calculate its density.
2 g/cm³
23.678 to 3 significant figures.
23.7
Convert 2.5 km into metres.
What is 2500 m?
A car travels at constant speed. What is its acceleration?
What is 0 m/s²?
A student lifts a 50 N box through a height of 2 m. Calculate the work done.
100 J
A liquid has a density of 1 g/cm³ and volume of 500 cm³. Calculate its mass.
500 g
How many significant figures are in 0.00670?
3
Name all seven SI base units.
metre (m)
kilogram (kg)
second (s)
kelvin (K)
ampere (A)
mole (mol)
candela (cd)
A force of 50 N acts on an object with a mass of 10 kg. Find the acceleration.
5 m/s²
A machine does 1200 J of work in 60 s. Calculate the power.
20 W
A rock has a mass of 600 g and density of 3 g/cm³. Calculate its volume.
200 cm³
Calculate and express in scientific notation:
(4 × 10³) × (2 × 10²)
8 × 10⁵