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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 4 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 energyA spring has constant 110 N/m and extension 6 cm within its linear range. Find the restoring-force magnitude in N.
N
2Motion and energyA constant 15 N force acts in the same direction as a 40 m displacement. Find work in J.
J
3Motion and energyLift a 6 kg mass vertically by 7 m. Using g = 10 m/s², find the increase in gravitational potential energy in J.
J
4Waves & soundA periodic wave has frequency 26 Hz and wavelength 23 m. Find its speed in m/s.
m/s
5Waves & soundA repeating signal has frequency 54 Hz. Find its period in seconds as a fraction.
s
6Electricity & circuitsResistors of 13 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 75 Ω, 23 Ω and 85 Ω are in series. Find total resistance in Ω.
Ω
8ChemistryA hypothetical element has isotopes of mass 33 u (55%) and 35 u (45%). Calculate its mean atomic mass in u.
u
9ChemistryAn ideal gas occupies 4 L at 230 K. With pressure and amount fixed, find its volume at 460 K in L.
L
10ChemistryAn ideal decay model starts with 1664 mg. What expected mass remains after 5 half-lives, in mg?
mg
11Biology & geneticsGenetics and inheritance: which term fits this description? An allele whose effect is masked in a heterozygote under complete dominance.
12Biology & geneticsFor Aa × aa, what fraction of expected offspring genotypes are aa? Give a fraction.

From Grade 10

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

13Biology & genetics (Grade 10)Cells and cell structures: which term fits this description? The net spread of particles from higher to lower concentration due to random motion.
14Motion and energy (Grade 10)An object moves at constant velocity 25 m/s for 35 s. Find displacement in m.
m
15Matter & forces (Grade 10)A sample has mass 374 g and volume 34 cm³. Calculate density in g/cm³.
g/cm³