Physics
What is the SI unit of force?
Newton (N)
What organelle is responsible for controlling the activities of a cell and contains the cell's DNA?
The nucleus
What is the chemical symbol for sodium?
Na
What is the largest planet in our Solar System?
Jupiter
Who is this science teacher?
👨where💍
Mr Manwaring
If you travel 60km/h in 2 hours, what is your average speed?
30km/h
What is the name of the process by which DNA is copied before cell division?
DNA replication
What type of bond is formed when two atoms share electrons?
Covalent bond
If you were standing on Mars, what colour would the sky appear during the daytime?
A butterscotch/reddish colour (due to fine dust in the Martian atmosphere).
What is my name?
Sahana
You drop a ball from a tall building. Ignoring air resistance, what is happening to the ball's acceleration as it falls?
It remains constant at 9.8m/s2 downward.
What type of cell division produces genetically identical daughter cells?
Mitosis
What happens to the equilibrium position of an exothermic reaction when the temperature is increased?
It shifts towards the reactants.
A black hole is not actually a "hole" in space. What is it?
A region of spacetime where gravity is so strong that nothing, including light, can escape beyond its event horizon.
When do the year 12s graduate?
21 November (in 79 days 😧)
A car travelling at 20 m/s doubles its speed to 40 m/s. By what factor does its kinetic energy increase?
4×
A mutation changes one nucleotide in a gene, but the amino acid sequence of the resulting protein remains unchanged. What type of mutation is this?
A silent mutation
In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, which species is oxidised?
Zn (Zinc)
Which planet in our Solar System has the shortest day?
Jupiter
How much can Mr Kumar bench?
Around 70kg
A charged particle enters a uniform magnetic field parallel to the field lines. What happens to its motion?
It experiences no magnetic force and therefore continues moving at constant velocity (because the magnetic force depends on the component of velocity perpendicular to the magnetic field).
Why does crossing over during meiosis increase genetic variation in a population?
Crossing over exchanges sections of DNA between homologous chromosomes, producing new combinations of alleles in gametes
A reaction has reached dynamic equilibrium. The concentration of one reactant is suddenly increased. What happens to the equilibrium position, and why?
The equilibrium shifts towards the products (the right), because the system responds to the increased reactant concentration by consuming some of the added reactant.
Why can astronomers determine what elements are present in a distant star even though they cannot collect a sample of the star?
Elements produce characteristic patterns of absorption or emission spectral lines, which can be identified in the star's light.
What do you call a duo of deadly science teachers, one known for teaching chem and the other physics?
Hint: Yr 12 debate adjudicator
Killer Kumars 💀