PIMSO 2025 P3 and P4 (Day 1)

Which of these is a gas?

• Water

• Air

• Ice

• Rock

Answer explanation

Answer: Air

Explanation:

Air is a mixture of gases, including oxygen and nitrogen, which are all around us. Water is a liquid, ice is a solid, and rock is a solid.

What do clouds do in the water cycle?

• Make water disappear

• Carry water vapor and turn it into rain or snow

• Change water into rocks

• Turn water into sunlight

Answer explanation

Answer: Carry water vapor and turn it into rain or snow

Explanation:

Clouds hold water vapor, which eventually condenses and falls to the Earth as precipitation, such as rain or snow.

Which of these is an example of a nonliving thing?

• Tree

• Bird

• Rock

• Flower

Answer explanation

Answer: Rock

Explanation:

A rock is nonliving. It doesn’t grow, reproduce, or need food. Plants and animals, like trees, birds, and flowers, are living things.

What do we call the process of water turning into vapor?

• Evaporation

• Condensation

• Precipitation

• Freezing

Answer explanation

Answer: Evaporation

Explanation:

Evaporation is when water turns into vapor due to heat from the sun, like when water from a puddle disappears into the air.

Which of these is a source of light?

• The Moon

• A Lamp

• A Rock

• A Cloud

Answer explanation

Answer: A Lamp

Explanation:

A lamp produces light. The Moon reflects light from the Sun, but it doesn't produce light on its own. Rocks and clouds don’t produce light.

What is the main source of energy for the Earth?

• The Moon

• The Sun

• The Wind

• The Ocean

Answer explanation

Answer: The Sun

Explanation:

The Sun is the main source of energy for Earth. It provides light and warmth, which are essential for life and weather patterns.

Which of these is a solid?

• Water

• Ice

• Air

• Steam

Answer explanation

Answer: Ice

Explanation: Ice is the solid form of water. It keeps its shape, unlike water (liquid) or steam (gas).

What is the process by which plants make their own food?

• Respiration

• Photosynthesis

• Digestion

• Evaporation

Answer explanation

Answer: Photosynthesis

Explanation: Plants use sunlight, water, and carbon dioxide to make their own food in a process called photosynthesis.

What do animals need to survive?

• Oxygen, water, food, and shelter

• Only food and air

• Only water and sunlight

• Only sunlight

Answer explanation

Answer: Oxygen, water, food, and shelter

Explanation: Animals need these basic things to live and thrive. Different animals may need different types of shelter, food, and water.

Which of these is a living thing?

• Rock

• Tree

• Water

• Sun

Answer explanation

Answer: Tree

Explanation: A tree is a living organism that grows, needs food and water, and can reproduce, unlike non-living things like rocks or water.