Speed
A car travels 200 metres in 10 seconds. What is its speed in metres per second?
20 m/s
What is the unit of force?
Newton
What is the smallest part of an element called?
Atom
What does density measure?
Mass per unit volume
What is the random, zig-zag movement of particles in a fluid called?
Brownian motion
A cyclist moves at a speed of 5 m/s for 12 seconds. How far does the cyclist travel?
60 metres
A force of 10 N is applied to a 2 kg object. What is the acceleration?
5 m/s²
What do we call two or more atoms bonded together?
Molecule
What is the Greek letter used to represent density?
Rho (ρ)
In which direction do particles move during diffusion?
From high to low concentration
A runner travels 400 metres at a speed of 4 m/s. How long does the run take in minutes and seconds?
1 minute 40 seconds
A box is pushed to the right with a force of 20 N, while friction pushes left with 5 N. What is the resultant force, and in which direction?
15 N to the right
What happens to the kinetic energy of particles when temperature increases?
It increases
What are the correct units for density in the metric and SI systems?
g/cm³ and kg/m³
What word describes the difference in concentration that causes diffusion to happen?
Gradient
A distance–time graph shows a straight line sloping upwards. What does this tell you about the speed of the object?
The speed is constant (steady)
An object accelerates at 3 m/s² when a force of 15 N is applied. What is the mass of the object?
5 kilograms
What do we call the change of state from liquid to gas?
Boiling (or Evaporation, if context allows)
Pure water has a density of 1 g/cm³. Will an object with a density of 0.8 g/cm³ float or sink?
Float
What is the term for when particles spread out evenly and there’s no net movement?
Equilibrium
Two lines are shown on a distance–time graph. Line A is steeper than Line B. Which object is moving faster, and how do you know?
Line A: The steeper line is the faster object
A trolley starts at rest. A resultant force causes it to accelerate at 2 m/s² for 4 seconds. What is its final speed?
8 m/s
Boiling requires input of heat energy. What type of process is this?
Endothermic
A metal block has a mass of 500 g and a volume of 250 cm³. What is its density?
2 g/cm³
What is the name of the process where water moved into the potato placed in pure water during the experiment?
Osmosis