Year 8 Midterm 3 2024 Science

Ayoub uses a microscope to look at some blood. He draws an image of what he observes. Which component of the blood transports nutrients?

• A
• B
• C

Which component of the blood transports oxygen

• A
• B
• C

Which component of the blood protects against pathogens.

• A
• B
• C

Here is the information Ayoub finds. Does the information support Ayoub's prediction?

• Yes
• No

Gases move between blood and the air in the lungs by...

• breathing
• diffusion
• digestion
• respiration

Sohaib investigates the colours in ink. The diagram shows his experiment at the start of the investigation. Name this method of separating the colours in ink.

• chromatography
• filtration
• distillation
• evaporation

The ink dot must be above the solvent. Choose a statement that does not explain this.

• ink would dissolve in the solvent
• solvent becomes stained with ink
• ink spreads out not getting a clear result
• ink would not dissolve in the solvent

Isra uses a tray and some marbles to model gas pressure in a container. Explain how Isra uses the equipment to model gas pressure in a container.

• By counting the number of marbles.
• By arranging marbles in a specific pattern.
• By measuring the weight of the marbles.
• By observing the collisions of marbles with the tray walls.

What does the tray represent in Kawsar's model of gas pressure?

• The temperature of the gas.
• The gas particles.
• The volume of the gas.
• The walls of the container.

What do the marbles represent in Kawsar's model?

• The temperature.
• The pressure gauge.
• The gas particles.
• The container walls.