Grade 9 Science
Motion described in words, graphs and equations, forces and the three laws, work and energy, the inside of the atom and the way atoms combine, sound as a wave, the cell and the tissues built from it, and how life continues from one generation to the next.
Print the whole term as one worksheet pack →Forces and Interactions
- Distance, displacement, speed and velocityLesson
Separate distance from displacement and speed from velocity, work out average speed, average velocity and average acceleration, and say what stays fixed in uniform circular motion.
- Motion graphs and the kinematic equationsLesson
Read velocity off the slope of a position-time graph and displacement off the area under a velocity-time graph, and use v = u + at, s = ut + ½at² and v² = u² + 2as.
- Force and Newton's three lawsLesson
Add forces to find the net force, use F = ma and F = mg, say what Newton's three laws claim, and treat two connected objects as one system.
Energy
Structure and Properties of Matter
- Inside the atomLesson
Count protons, neutrons and electrons from an atomic number and a mass number, fill the shells and read off a valency, and say what makes two atoms isotopes.
- How atoms combine, and what a molecule weighsLesson
Use the laws of conservation of mass and of constant proportions, tell a covalent bond from an ionic one, write a formula by crossing over valencies, and add up a molecular or formula unit mass.
Waves and Electromagnetic Radiation
Structure and Function
- The cell and what is inside itLesson
Name the parts of a plant and an animal cell and say what each does, tell a prokaryotic cell from a eukaryotic one, and use osmosis to explain what happens to a cell in salty water.
- Plant and animal tissuesLesson
Name the three meristems and the permanent tissues they become, match each plant and animal tissue to its job, and tell the joints and muscle types apart by what they do.