Scientific Method

Which is regarded as science?

• Student A makes boat from used water bottles.

• Student B uses math to calculate amount of energy obtained from solar panels.

• Student D does experiment on the capability of air purifying plants.

• Student C creates eco-friendly shoes.

Which is regarded as technology?

• Student A proposes solutions to help solve flooding situation.

• Student B makes chairs from used cardboard.

• Student C conducts experiment on fertilizer for different kinds of plants.

• Student D explain the chemical reactions taking place in human bodies.

Which students has the skill of forecasting?

• Student A calculate the money spent in purchasing groceries.

• Student B design a method to test whether plant can grow under different light colors.

• Student C tries to fix mobile phone by putting in new battery.

• Student D tells others that the streets will be crowded because there are a big concert at a stadium.

Which of the following is NOT the attitude required for doing good science?

• Student A notices anything being misplaced in a room.

• Student B has thirst for new knowledge.

• Student C makes decision without personal preferences.

• Student D accepts any wrong assumptions if there are enough evidences to disprove.

A student is testing to see how three boats with different shapes but made from the same number of recycled water bottles can hold different weight. What are the independent variable and dependent variable in this test, respectively?

• The shapes of the boat, the number of water bottles

• That number of water bottles, the shapes of the boat

• The size of the boat, the number of water bottles

• The shape of the boat, the weight the boat can hold.

A rider hears some scratchy noises from his motorbike while delivering food to customer and decides to change the rack that holds delivery bag. What is the rider's hypothesis about the cause of the noise?

• The new rack will suppress the noise

• Delivering food to customer cause annoying noise

• The scratchy noise is caused by the food bag on the rack

• If the old rack is removed, the noise will disappear.

A scientist is doing an experiment on the cause of the death of fish in a river nearby an industry compound by dropping three different chemicals in three different tanks containing the same fish. What is one of the controlled variable in this experiment?

• The types of chemical

• The health of the fish in the tanks

• The quality of water in the tanks

• The water released from the industry compound

An air purifying necklace can remove PM 2.5 effectively therefore if everyone wears the necklace, the city's PM 2.5 air pollution can be solved. Is this conclusion correct? Why?

• Correct, because by having everyone wear the necklace, the city's air will be continuously purified

• Correct, because the necklace can remove PM 2.5 effectively

• Incorrect, because too many necklace will consume too much energy and more toxic chemicals will be released into the air

• Incorrect, because the necklace can remove PM 2.5 in small portions compare to the huge amount of air in the city

Student K is analyzing data from an experiment and trying to adjust some numbers manually so that the results could be more consistent with the hypothesis. Is Student K doing a good science?

• Yes, because analyzing data always involve adjusting some numbers in good experiment

• Yes, because doing good science means that the results should be in consistent with the hypothesis

• No, because the data should only come from an experiment, not the number added by an experimenter

• No, because doing good science involves more numerical operations.