Science Worksheets for Grade 3

📆 Updated: 1 Jan 1970
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🔖 Category: Science

Science Worksheets for Grade 3 provide engaging and informative learning materials for young learners to explore various scientific concepts and develop their critical thinking skills. These worksheets cover a wide range of topics, including the human body, plants, animals, weather, and much more. Designed to meet the curriculum standards for third graders, these worksheets offer a structured approach to help children grasp complex scientific ideas in an accessible and enjoyable way.



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  1. English Worksheets Grade 3
  2. First Grade Science Worksheets
  3. 4th Grade Science Worksheets
  4. 3rd Grade Noun Worksheets
  5. 4th Grade Vocabulary Worksheets
  6. First Grade Social Studies Worksheets
  7. 3rd Grade Solar System Worksheets
  8. Second Grade Printable Worksheets
  9. States of Matter 5th Grade Science Worksheets
  10. Earth Science Worksheets Grade 3
  11. 2nd Grade Science Printable Worksheets
  12. 8 Grade Science Worksheets
  13. 1st Grade Science Matter Worksheets
  14. Grade Science Worksheets
  15. Free 6 Grade Science Worksheets
English Worksheets Grade 3
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First Grade Science Worksheets
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4th Grade Science Worksheets
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3rd Grade Noun Worksheets
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4th Grade Vocabulary Worksheets
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First Grade Social Studies Worksheets
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3rd Grade Solar System Worksheets
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Second Grade Printable Worksheets
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States of Matter 5th Grade Science Worksheets
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Earth Science Worksheets Grade 3
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2nd Grade Science Printable Worksheets
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8 Grade Science Worksheets
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1st Grade Science Matter Worksheets
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Grade Science Worksheets
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Free 6 Grade Science Worksheets
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What is the water cycle?

The water cycle, also known as the hydrological cycle, is the continuous process through which water evaporates from bodies of water, condenses in the atmosphere to form clouds, falls back to the Earth as precipitation (rain, snow, sleet, or hail), and eventually returns to bodies of water through runoff or seepage. This cycle is crucial for distributing water across the planet and sustaining life on Earth.

What is photosynthesis?

Photosynthesis is the process by which green plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. This process involves the absorption of sunlight by chlorophyll in chloroplasts, which drives the chemical reaction that produces glucose as a form of energy storage for the plant and releases oxygen as a byproduct.

How does a plant grow from a seed?

When a seed is planted in soil, it absorbs water which softens the seed coat and triggers germination. The embryo inside the seed then starts to grow, developing roots that anchor the plant to the soil and absorb water and nutrients. The shoot then emerges from the seedling and starts to grow towards the light, forming leaves that photosynthesize and provide energy for further growth. As the plant continues to develop, it forms stems, branches, and eventually flowers which produce seeds, completing the lifecycle of the plant.

What are the three states of matter?

The three states of matter are solids, liquids, and gases.

How do magnets attract and repel each other?

Magnets attract and repel each other due to their magnetic fields. When two magnets are brought near each other, like poles (north-north or south-south) repel each other because their magnetic fields are in the same direction and thus they oppose each other. On the other hand, unlike poles (north-south or south-north) attract each other because their magnetic fields are in opposite directions and hence they pull towards each other. This attraction and repulsion result from the interactions of the magnetic field lines that surround magnets, causing them to either push away or pull towards each other.

What is the difference between a solid, liquid, and gas?

The main difference between a solid, liquid, and gas lies in the arrangement and movement of their constituent particles. In a solid, particles are closely packed together in a fixed, ordered structure, resulting in a rigid shape. In a liquid, particles are still close together but are free to move past one another, allowing the substance to flow and take the shape of its container. In a gas, particles are far apart and move rapidly, filling the entire space available to them. This results in gases having no fixed shape or volume.

How does a butterfly transform from a caterpillar?

A butterfly transforms from a caterpillar through a process called metamorphosis. The caterpillar forms a chrysalis or pupa, inside of which its body undergoes dramatic changes, breaking down its tissues and reorganizing them into the body parts of a butterfly. This metamorphosis process typically takes a few weeks to complete, after which the butterfly emerges from the chrysalis, with wings and other adult features that were not present in the caterpillar stage, ready to start its new life.

What is the purpose of the skeletal system?

The purpose of the skeletal system is to provide structural support to the body, protect vital organs, enable movement by acting as attachment points for muscles, store minerals such as calcium and phosphorus, and produce blood cells in the bone marrow.

How does the digestion process work in the human body?

Digestion in the human body begins in the mouth, where enzymes in saliva break down food as it is chewed. The food then travels down the esophagus to the stomach, where it is further broken down by stomach acid and enzymes. From the stomach, the partially digested food moves into the small intestine, where additional enzymes from the pancreas and liver help break down nutrients which are then absorbed into the bloodstream. The remaining waste travels to the large intestine where water is absorbed and the waste is formed into feces before being eliminated from the body.

What is the purpose of the respiratory system?

The purpose of the respiratory system is to facilitate the exchange of oxygen and carbon dioxide between the body and the environment. This process occurs through breathing, where oxygen is inhaled into the lungs and transported to the bloodstream, while carbon dioxide is removed from the bloodstream and exhaled out of the body. This vital function provides the body with the oxygen needed for cells to produce energy and removes waste carbon dioxide from the body.

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