Physics
What is the unit of electrical current?
Answer: Ampere (A)
Chaos!Roll a die: 1–2 = lose 100 points, 3–4 = gain 100 points, 5 = gain 300 points, 6 = double your current score.
What are the four bases found in DNA?
Answer: Adenine, thymine, cytosine and guanine.
Steal! Choose another team. If they currently have more points than you, take 200 points from them.
Which organ pumps blood around the body?
Answer: Heart
Point Reset: Everyone's score returns to 0.
What is the imaginary line around Earth at 0° latitude?
Answer: Equator
What is 15% of $200?
Answer: $30
Chaos! Roll a die: 1–2 = lose 100 points, 3–4 = gain 100 points, 5 = gain 300 points, 6 = double your current score.
A cyclist travels 150 m in 30 seconds. What is their average speed?
Answer: 5 m/s
What process produces two genetically identical daughter cells?
Answer: Mitosis
What molecule carries oxygen in red blood cells?
Answer: Haemoglobin
Bank Error: Every team loses 100 points.
What process involves the movement of people from rural areas to cities?
Answer: Rural-to-urban migration.
A car travels at 90 km/h for 2 hours. How far does it travel?
Answer: 180 km
Double or Nothing: Your team can attempt the next question immediately for double points. If incorrect, lose the double value of the question.
What happens to the kinetic energy of an object if its velocity is doubled?
Answer: It increases by a factor of 4.
Freeze! Choose a team. They cannot answer the next question.
What is the role of ribosomes?
Answer: Protein synthesis.
Generous Teacher: Give another team 200 points.
Where does most nutrient absorption occur in the digestive system?
Answer: Small intestine
What is the urban heat island effect?
Answer: Urban areas being warmer than surrounding rural areas due to factors such as buildings, roads and reduced vegetation.
A bag contains 4 red, 3 blue, and 5 green balls. What is the probability of selecting a blue ball?
Answer: 3/12 = 1/4
A 10 kg object accelerates at 3 m/s². What net force acts on it?
Answer: 30 N
Why is genetic variation important to a population?
Answer: It provides differences between individuals that can allow some individuals to survive and reproduce more successfully when environmental conditions change.
Swap Scores: Choose another team and swap your current scores.
Why does the small intestine contain many villi?
Answer: They greatly increase the surface area available for nutrient absorption.
Explain why deforestation can increase soil erosion.
Answer: Removing vegetation reduces root systems that hold soil together and removes vegetation that intercepts rainfall. This allows more water to flow across the surface and carry soil away.
Point Tax: Choose another team. They lose 100 points
A $30,000 car depreciates by 15% in its first year. What is its value after one year?
Answer: $25,500
Bank Error: Every team loses 100 points
A projectile is launched horizontally from a 20 m high cliff. Ignoring air resistance, explain why its horizontal velocity remains constant while its vertical velocity changes.
Answer: Gravity acts vertically downward, so there is no horizontal acceleration. The horizontal component of velocity therefore remains constant, while gravity causes the vertical component of velocity to increase downward.
A population of bacteria is exposed to an antibiotic. Most bacteria die, but a small number survive and reproduce. Explain how this can lead to antibiotic resistance becoming common.
Answer: Resistant bacteria have a survival advantage. They survive the antibiotic and reproduce, passing resistance genes to their offspring. Over generations, resistant bacteria become a larger proportion of the population.
Explain why a person's heart rate increases during exercise.
Answer: Working muscles require more oxygen and nutrients and produce more carbon dioxide. The cardiovascular system responds by increasing heart rate, increasing blood flow to the muscles and helping transport oxygen and remove carbon dioxide.
A coastal city experiences rapid population growth. Explain two ways this could increase pressure on the local environment.
Answer: Possible responses include increased demand for freshwater, increased waste and sewage, habitat destruction, increased energy consumption, greater traffic and air pollution, or coastal development damaging ecosystems.
Lucky NumberRoll a die. Your team receives that many × 50 points.
A ship travels 12 km east and then 18 km north. Calculate the direct distance from its starting point to its final position.
Answer: 21.6 km
Using Pythagoras:
d² = 12² + 18²
d² = 468
d ≈ 21.6 km