Quiz Name : Are you as smart as a grade 9 student?

Vecka : v22

MA 1. A teacher recorded the number of books read by 5 students in a month: 2, 4, 4, 6, 8 What is the mode of this data set?

A - 2
B - 4
C - 6
D - ---

Korrekt svar : B - 4


BI 2. A student set up an experiment using a potted plant. One leaf was covered with petroleum jelly on both surfaces, while another leaf was left uncovered. After a few hours in sunlight, the uncovered leaf showed a drop in mass, but the covered leaf did not. What is the most likely explanation for this observation?

A - The covered leaf stopped photosynthe...read more A - The covered leaf stopped photosynthesis completely
B - The uncovered leaf lost water mainly...read more B - The uncovered leaf lost water mainly through transpiration
C - The covered leaf absorbed more water...read more C - The covered leaf absorbed more water from the soil
D - ---

Korrekt svar : B - The uncovered leaf lost water mainly through transpiration


GEO 3. A country is facing severe water shortages due to overuse of groundwater and irregular rainfall. The government plans to reduce the problem by adopting different strategies. Which of the following actions would be the most effective combination of conservation measures?

A - Increasing groundwater extraction an...read more A - Increasing groundwater extraction and building more factories
B - Rainwater harvesting, afforestation,...read more B - Rainwater harvesting, afforestation, and reducing water wastage
C - Importing bottled water and cutting ...read more C - Importing bottled water and cutting down forests for farmland
D - ---

Korrekt svar : B - Rainwater harvesting, afforestation, and reducing water wastage


CHEM 4. A student adds blue litmus paper to a solution and it turns red. The student then adds a small amount of sodium hydroxide to the same solution, and the red color disappears and turns purple/neutral. What is the correct explanation for this observation?

A - The solution was initially basic and...read more A - The solution was initially basic and became acidic after adding sodium hydroxide
B - The solution was initially acidic an...read more B - The solution was initially acidic and became neutral due to neutralization
C - The solution was initially neutral a...read more C - The solution was initially neutral and became strongly acidic
D - ---

Korrekt svar : B - The solution was initially acidic and became neutral due to neutralization


PHY 5. An astronaut goes from Earth to the Moon. Which of the following statements is correct?

A - The astronaut’s mass decreases, bu...read more A - The astronaut’s mass decreases, but weight changes due to weaker gravity
B - The astronaut’s mass stays the sam...read more B - The astronaut’s mass stays the same, but weight decreases due to weaker gravity
C - The astronaut’s mass and weight bo...read more C - The astronaut’s mass and weight both stay the same
D - ---

Korrekt svar : B - The astronaut’s mass stays the same, but weight decreases due to weaker gravity


SS 6. In a market, the price of mangoes increases significantly during summer because many people want to buy them, but the supply remains limited. Which economic concept best explains this situation?

A - Inflation
B - Supply and demand
C - Barter system
D - ---

Korrekt svar : B - Supply and demand


PE 7. In a 4 × 100 meter relay race, which of the following is most important for a team’s success?

A - Each runner runs the entire distance...read more A - Each runner runs the entire distance as fast as possible without coordination
B - Smooth and well-timed baton exchange...read more B - Smooth and well-timed baton exchanges between runners
C - Only the fastest runner runs all fou...read more C - Only the fastest runner runs all four sections of the race
D - ---

Korrekt svar : B - Smooth and well-timed baton exchanges between runners


MA 8. A student rolls a fair six-sided die once. What is the probability of getting an even number?

A - 1/6
B - 1/2
C - 1/3
D - ---

Korrekt svar : B - 1/2


BI 9. A student compared three plants: Plant A: tall stem, many branches, thick woody stem Plant B: small soft stem, no branches, short height Plant C: medium height, woody stem, few branches Which classification is most accurate?

A - Plant A = herb, Plant B = tree, Plan...read more A - Plant A = herb, Plant B = tree, Plant C = shrub
B - Plant A = tree, Plant B = herb, Plan...read more B - Plant A = tree, Plant B = herb, Plant C = shrub
C - Plant A = shrub, Plant B = herb, Pla...read more C - Plant A = shrub, Plant B = herb, Plant C = tree
D - ---

Korrekt svar : B - Plant A = tree, Plant B = herb, Plant C = shrub


GEO 10. A student studies a region where mountains block moist winds, causing one side to receive heavy rainfall while the other side remains dry. What is this geographical phenomenon called?

A - Monsoon effect
B - Rain shadow effect
C - Ocean current effect
D - ---

Korrekt svar : B - Rain shadow effect


CHEM 11. A student is given three substances: Substance A turns red litmus paper blue Substance B turns blue litmus paper red Substance C does not change either litmus paper Which of the following is correct?

A - A is an acid, B is a base, C is neut...read more A - A is an acid, B is a base, C is neutral
B - A is a base, B is an acid, C is neut...read more B - A is a base, B is an acid, C is neutral
C - A is neutral, B is a base, C is an a...read more C - A is neutral, B is a base, C is an acid
D - ---

Korrekt svar : B - A is a base, B is an acid, C is neutral


PHY 12. A student drops two objects from the same height in a vacuum chamber: a feather and a stone. Both reach the ground at the same time. What is the correct explanation for this result?

A - The stone has more mass, so it falls...read more A - The stone has more mass, so it falls faster even without air resistance
B - In a vacuum, all objects fall at the...read more B - In a vacuum, all objects fall at the same rate regardless of mass
C - The feather is lighter, so it experi...read more C - The feather is lighter, so it experiences stronger gravity
D - ---

Korrekt svar : B - In a vacuum, all objects fall at the same rate regardless of mass


SS 13. Which of the following best describes the role of a bank in an economy?

A - A place where goods are produced and...read more A - A place where goods are produced and sold directly
B - An institution that stores money and...read more B - An institution that stores money and provides loans
C - A system used only for trading goods...read more C - A system used only for trading goods without money
D - ---

Korrekt svar : B - An institution that stores money and provides loans


PE 14. Which of the following best describes the difference between indoor and outdoor games?

A - Indoor games are always played indiv...read more A - Indoor games are always played individually, while outdoor games are always team-based
B - Indoor games are played inside build...read more B - Indoor games are played inside buildings, while outdoor games are played in open spaces
C - Indoor games require more physical s...read more C - Indoor games require more physical strength than all outdoor games
D - ---

Korrekt svar : B - Indoor games are played inside buildings, while outdoor games are played in open spaces


MA 15. The following data shows the marks of 6 students in a test: 10, 12, 15, 12, 18, 13 What is the mean (average) of this data set?

A - 12
B - 13.33
C - 14
D - ---

Korrekt svar : B - 13.33