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Grade 11 · Science

Grade 11 Science diagnostic

15 questions on motion and energy, waves & sound, electricity & circuits, chemistry and biology & genetics, plus 3 from Grade 10. Answer what you can, then check your answers to see which topics are secure and what to practise next.

15 questions5 topicsAbout 15 minutesSet 2 of 5

Skip a question if you do not know the answer. It is better than guessing, because it shows what to practise.

1Motion and energyLift a 16 kg mass vertically by 15 m. Using g = 10 m/s², find the increase in gravitational potential energy in J.
J
2Motion and energyVelocity changes from 10 m/s to 34 m/s in 3 s. Find average acceleration in m/s².
m/s²
3Motion and energyA spring has constant 160 N/m and extension 18 cm within its linear range. Find the restoring-force magnitude in N.
N
4Waves & soundA periodic wave has frequency 62 Hz and wavelength 13 m. Find its speed in m/s.
m/s
5Waves & soundA repeating signal has frequency 137 Hz. Find its period in seconds as a fraction.
s
6Electricity & circuitsResistors of 34 Ω and 46 Ω are connected in parallel. Find the equivalent resistance in Ω as an exact fraction or integer.
Ω
7Electricity & circuitsThree ideal resistors of 43 Ω, 61 Ω and 23 Ω are in series. Find total resistance in Ω.
Ω
8ChemistryA solution contains 37 mol of solute in a final solution volume of 14 L. Find concentration in mol/L as a fraction or decimal.
mol/L
9ChemistryDilute 50 mL of a 1.2 mol/L solution to 0.3 mol/L without losing solute. Find the final volume in mL.
mL
10ChemistryAn ideal decay model starts with 76 mg. What expected mass remains after 1 half-lives, in mg?
mg
11Biology & geneticsGenetics and inheritance: which term fits this description? An allele expressed in a heterozygote under a simple complete-dominance model.
12Biology & geneticsHypothetical rates at pH 4, 6, 8 are 2, 9, 3 units/min. At which tested pH is the rate highest?

From Grade 10

These questions check skills from the grade below, so gaps can be spotted early.

13Matter & forces (Grade 10)A sample has mass 1518 g and volume 66 cm³. Calculate density in g/cm³.
g/cm³
14Biology & genetics (Grade 10)Ecosystems and interactions: which term fits this description? All interacting populations in an area.
15Inquiry (Grade 10)Why repeat a measurement?