Cambridge Science Checkpoint 01 Test

What is the primary function of the human excretory (renal) system?

• To filter waste products from the blood and excrete them as urine.

• To pump oxygenated blood throughout the body.

• To digest food and absorb nutrients.

• To regulate body temperature through sweat.

Which atom loses three electrons to form an ion?

• Li

• Mg

• Al

• C

Which atom forms a negative ion?

• Li

• Mg

• Cl

• K

Which container gains the most thermal energy according to the graph?

• Black container

• Shiny silver container

• Both containers gain the same amount

• Neither container gains thermal energy

Through which process does thermal energy travel through metal containers?

• Conduction

• Radiation

• Convection

• Evaporation

What happens to the particles in the metal as they gain thermal energy?

• They move slower

• They gain mass

• They vibrate more

• They change color

As energy passes through the metal, what do the particles do with each other?

• They repel each other

• They collide with each other

• They fuse together

• They remain stationary

In Mia's first experiment, which metal was confirmed to cause a displacement reaction with iron sulfate solution?

• Copper

• Magnesium

• Zinc

• Iron

Why does Mia replace the iron sulfate solution each time with a new sample?

• To ensure the solution is fresh and uncontaminated

• To change the concentration of the solution

• To test different types of iron sulfate

• To observe different colors in the solution

Name the cells in the root that absorb water from the soil.

• Root hair cells

• Xylem cells

• Phloem cells

• Guard cells