Chemistry
Motion
Ecosystems
Scientific Method
Random Variety
100
Which subatomic particle has no charge?
Neutrons
100
Two students are in a tug-of-war, fighting over a dynamics cart for a Physics CAT. One student pulls the cart to the right, exerting 300 N of force. The other pulls in the opposite direction with 170 N of force.
Give the net force and direction in which the cart will move.
130 N to the right
100
Name the chemical reaction animal cells will use to gain energy from its food.
Cellular Respiration
100
Define the term 'accuracy' in science.
How closely a measurement is to the 'true', 'correct', or 'accepted' value.
100
Why does he call himself 'Vector'?
Because he's committing crime with direction and magnitude.
Oh yeah.
200
Distinguish a cation from an anion, including the relationship between their protons and electrons.
Cations are positively charged atom/an atom that has more protons than electrons.
Anions are negatively charged and have more electrons than protons.
200
In year 10, Stanley has a period 0 maths class in P8, followed by a chemistry class in S5 (across the campus).
One morning, he sprints between each class. During a 10 second interval of his run, he has an initial velocity of 7 m/s and a final velocity of 2 m/s.
Calculate Stanley's average acceleration during this 10-second interval.
-0.5 m/s
200
What is a producer?
Any organism that can produce their own energy source/food
200
Alex and Henry are testing if increasing sugar supplied to yeast will affect the rate of cell respiration.
They prepare 5 flasks with varying amounts of sugar: 1g, 3g, 5g, 7g, and 9g. All flasks contained 3g of yeast. They pour warm water into the flasks and seal them with a balloon. The flasks are then placed in a water bath, maintaining a temperature of 30 degrees Celsius.
Give a control variable for this experiment.
- Amount of yeast in each flask
- Temperature of water
200
Who is the creator of the Manga/Anime 'Jujustu Kaisen'
Gege Akutami
300
Mr Scarborough applies 3 drops of universal indicator to an unknown, clear substance. The liquid turns a dark blue, consistent with '11' on the pH chart above.
Is the substance acidic or alkaline?
the substance is a base (alkaline).
300
In his free time, Mr Young practises karate.
He measures the striking force of his kick using a 'powerkube', a machine that can measure the force exerted by anyone that hits it.
After kicking it, the powerkube measures that Mr Young's kick had an impact force of 1200 N. Given that Mr Young's leg has a mass of 15 kg, calculate the acceleration of his kick (in m/s).
80 m/s
F = ma
a = F/m
a = 1200/15
300
What is the chemical formula for photosynthesis?
6CO2 + 6H2O --> C6H12O6 + 6O2
300
How can you minimise the affects of uncontrolled variables in any experiment?
Run the experiment multiple times/multiple trials.
300
Which team won the last FIFA World Cup, held in 2022?
Argentina
400
Carbon has an atomic number of 6.
What is the electron configuration of a carbon ion with a charge of 5 - ?
2, 8, 1
400
The movement of a possum, moving right (+) to left (-), was recorded on the following velocity-time graph.
Between which times was the possum:
a) Stationary
b) Travelling at a constant speed, in a constant direction
c) Accelerating towards the left (-)
a) between 11 - 13 seconds
b) between 3 - 8 seconds, & between 14 - 19 seconds
c) between 13 - 14 seconds
400
Describe a factor that could decrease photosynthesis rates.
Acceptable responses include:
Sunlight Exposure: low light levels will decrease photosynthesis
Water Availability: low water availability will decrease photosynthesis
Chlorophyll count: lower amounts of functioning chlorophyll can decrease photosynthesis
Surface area of leaves: leaves that are have less surface area exposed to the sun will likely have lower photosynthesis rates than those that have more
400
A researcher wanted to see the affects of caffeine on reaction time. He divides his group of participants into 2 groups. Group A drinks a cup of coffee 5 minutes before attempting a digital reaction time test. Group B does not drink any coffee before their reaction time test.
What is the dependent and independent variable of this experiment?
Dependent Variable: Reaction time/Scores on digital reaction time test
Independent Variable: Coffee
400
What is the name of the ballet dance move that involves turning on either ball of or point of foot.
Pirouette