Short & Long Answer Questions for Class 6: HOTS questions and answers for Science

Short Answer Questions:
1. What is photosynthesis?
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, carbon dioxide, and water.
2. What is the function of the nucleus in a cell?
The nucleus is the control center of the cell and contains genetic material (DNA) that determines the cell's characteristics and activities.
3. Explain the difference between a herbivore and a carnivore.
Herbivores are animals that eat only plants, while carnivores are animals that eat only meat.

Long Answer Questions:

The Water Cycle

Introduction:
The water cycle is the continuous movement of water on, above, and below the surface of the Earth.

Evaporation:
Water from oceans, lakes, and rivers evaporates due to heat from the sun, forming water vapor in the atmosphere.

Condensation:
Water vapor in the atmosphere cools and condenses to form clouds.

Precipitation:
When the clouds become heavy with water, precipitation occurs in the form of rain, snow, sleet, or hail.

Runoff:
Excess water from precipitation flows over the land surface into rivers, lakes, and oceans.

Conclusion:
The water cycle is vital for maintaining the Earth's ecosystems and ensuring the availability of freshwater for plants, animals, and humans.

Human Body Systems

Introduction:
The human body consists of several systems that work together to keep the body functioning properly.

Respiratory System:
The respiratory system helps in breathing by taking in oxygen and removing carbon dioxide from the body.

Circulatory System:
The circulatory system transports oxygen, nutrients, and waste products throughout the body using the heart, blood vessels, and blood.

Digestive System:
The digestive system breaks down food into nutrients that can be absorbed by the body for energy and growth.

Nervous System:
The nervous system controls and coordinates the body's activities by sending electrical signals between the brain, spinal cord, and nerves.

Conclusion:
Each system plays a crucial role in maintaining the body's overall health and well-being.