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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 5 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 device receives 4300 J and delivers 3010 J of useful energy. Find its efficiency as a percentage.
%
2Motion and energyA perpendicular force of 2884 N acts over 28 m². Find the pressure in Pa.
Pa
3Motion and energyAn object of mass 7 kg accelerates at 1 m/s². Find the net force in N.
N
4Waves & soundA periodic wave has frequency 53 Hz and wavelength 21 m. Find its speed in m/s.
m/s
5Waves & soundA repeating signal has frequency 77 Hz. Find its period in seconds as a fraction.
s
6Electricity & circuitsResistors of 10 Ω and 47 Ω are connected in parallel. Find the equivalent resistance in Ω as an exact fraction or integer.
Ω
7Electricity & circuitsThree ideal resistors of 26 Ω, 72 Ω and 80 Ω are in series. Find total resistance in Ω.
Ω
8ChemistryA hypothetical element has isotopes of mass 66 u (85%) and 72 u (15%). Calculate its mean atomic mass in u.
u
9ChemistryAn ideal gas occupies 19 L at 250 K. With pressure and amount fixed, find its volume at 500 K in L.
L
10ChemistryA sample has mass 112 g and molar mass 7 g/mol. Find its amount in mol.
mol
11Biology & geneticsGenetics and inheritance: which term fits this description? An observable characteristic produced through genes and environment.
12Biology & geneticsWhich statement is most accurate?

From Grade 10

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

13Biology & genetics (Grade 10)Ecosystems and interactions: which term fits this description? An organism that breaks down dead organic material and wastes.
14Inquiry (Grade 10)Which makes a prediction testable?
15Motion and energy (Grade 10)An object moves at constant velocity 14 m/s for 21 s. Find displacement in m.
m