PSLE Science Made Simple Quiz

What is the main focus of the video introduced by the host?

• Discussing a history topic

• Explaining a new scientific theory

• Analyzing a past science exam question

• Analyzing a math problem

What happens to the oxygen bubbles released during photosynthesis in the experiment?

• They dissolve in water

• They move downwards

• They remain stationary

• They move upwards into the air space

Why does the water level Q move down in the experiment?

• The plant absorbs water

• The plunger pushes the water down

• Oxygen collects in the air space, displacing water

• The lamp heats the water

Which gas is released by the plant during photosynthesis in the experiment?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen

What is the correct reason for the water level Q moving down according to the video?

• The plant releases water

• The plunger moves

• The lamp evaporates the water

• Oxygen collects in the air space