Scientific Endeavour (Pre-WA Quiz Revision)

Science is NOT about the study of _______________.

• the physical properties of metals and plastics

• how climate change affects marine organisms

• how sound travels through solid, liquid and gases

• how our zodiac signs or horoscope affects our life in the future

Which of the following is considered an example of qualitative data collected between two students?

• John's height is 1.68 m and Joe's height is 1.70 m.

• Mary is taller than May by 2 cm.

• May's skin tone is lighter than Mary.

• Joe weighs 3 kg heavier than John.

Which of following terms describes 'a proposed explanation (an intelligent guess) for an observation'?

• Evaluation

• Hypothesis

• Conclusion

• Experimentation

Which of the following is an example of a quantitative data collected between two fruits?

• A durian is green in colour but a rambutan is red.

• There are 9 seeds in a durian but a rambutan has only 1 seed.

• A durian is thorny but a rambutan is hairy.

• A durian is sweet but a rambutan can taste sour.

The following is written by a student who is carrying out an experiment using the Practices of Science. Which stage of the Practices of Science is carried out by the student?

“Zhi Bin observed that the almond cookies with more baking soda added had nicer texture. This is because baking soda creates air spaces within each cookie so that it is soft and rises to a nice shape. This shows that cookies with more baking soda added will have nicer texture.”

• posing a question

• constructing a hypothesis

• conducting experiment

• developing explanations

Ahmad wants to investigate how the amount of sunlight affects the growth of plants.

He placed the first pot of plant inside a paper box so that no light can enter.

He placed the second pot of plant near a window.

He placed the third pot of plant in the open with direct sunlight.

After 5 days, he measured the height of the plants to find out how well the plants have grown.

During the experiment, he used the same type of plants, gave same amount of soil and same amount of water to the plants.

What is the changed variable in his experiment?

• Amount of sunlight

• Height of the plant

• Amount of water

• Type of plant

Ahmad wants to investigate how the amount of sunlight affects the growth of plants.

He placed the first pot of plant inside a paper box so that no light can enter.

He placed the second pot of plant near a window.

He placed the third pot of plant in the open with direct sunlight.

After 5 days, he measured the height of the plants to find out how well the plants have grown.

During the experiment, he used the same type of plants, gave same amount of soil and same amount of water to the plants.

What is the measured variable in his experiment?

• Amount of sunlight

• Height of plant

• Amount of water

• Type of plant

Ahmad wants to investigate how the amount of sunlight affects the growth of plants.

He placed the first pot of plant inside a paper box so that no light can enter.

He placed the second pot of plant near a window.

He placed the third pot of plant in the open with direct sunlight.

After 5 days, he measured the height of the plants to find out how well the plants have grown.

During the experiment, he used the same type of plants, gave same amount of soil and same amount of water to the plants.

What could be a hypothesis for this experiment?

• Does the amount of sunlight affects the growth of plants?

• As the amount of water given to a plant increases, it will grow taller.

• As the amount of sunlight given to a plant increases, it will grow taller.

• When the amount of sunlight given to a plant increases, the plant will carry out more photosynthesis to make food so that it can grow taller.

What is the SI unit for Length?

• mm

• cm

• m

• km

What is the SI unit for Mass?

• mg

• g

• kg