8th Grade Science Worksheets

📆 Updated: 1 Jan 1970
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🔖 Category: 8th Grade

Are you in search of well-crafted and comprehensive 8th grade science worksheets? Look no further! We understand that finding suitable educational resources for middle school students can be a challenge. That's why we have carefully curated a collection of engaging worksheets that are designed to cover various science topics specifically tailored for 8th graders. With our worksheets, students can strengthen their understanding of subjects such as chemistry, physics, biology, and more.



Table of Images 👆

  1. Topographic Maps Worksheets 8th Grade
  2. 8th Grade Physical Science Worksheets
  3. Glencoe 8th Grade Science Worksheets
  4. 8th Grade Science Vocabulary Worksheets
  5. 8th Grade History Worksheets
  6. 8th Grade Printable Worksheets
  7. 8th Grade Science Test Worksheets
  8. 8th Grade English Worksheets
  9. 8th Grade Earth Science Lessons
  10. 8th Grade Science Printable Worksheets
Topographic Maps Worksheets 8th Grade
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8th Grade Physical Science Worksheets
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Glencoe 8th Grade Science Worksheets
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8th Grade Physical Science Worksheets
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8th Grade Science Vocabulary Worksheets
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8th Grade History Worksheets
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8th Grade Printable Worksheets
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8th Grade Science Test Worksheets
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8th Grade English Worksheets
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8th Grade Earth Science Lessons
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8th Grade Science Printable Worksheets
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8th Grade Spelling Worksheets



What is the scientific method and its steps?

The scientific method is a systematic approach used by scientists to study natural phenomena and acquire knowledge. The steps of the scientific method typically include making observations, forming a hypothesis, conducting experiments, analyzing data, and drawing conclusions. The process is often iterative, with results leading to further experimentation and refinement of hypotheses. By following this method, scientists can systematically investigate and understand the world around them.

How does photosynthesis work?

Photosynthesis is a process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy stored in glucose molecules. Chlorophyll, a green pigment in chloroplasts of plant cells, absorbs light energy in the presence of carbon dioxide and water. This energy is used to drive a series of complex biochemical reactions that result in the production of glucose and oxygen as byproducts. The glucose serves as a source of energy for the plant, while oxygen is released into the atmosphere.

What are the differences between prokaryotic and eukaryotic cells?

Prokaryotic cells are simpler, smaller, and lack a defined nucleus, while eukaryotic cells are more complex, larger, and have a true nucleus enclosed by a membrane. Prokaryotic cells have circular DNA and lack membrane-bound organelles, whereas eukaryotic cells have linear DNA and contain membrane-bound organelles such as mitochondria and the endoplasmic reticulum. Additionally, prokaryotic cells reproduce via binary fission, while eukaryotic cells reproduce through mitosis.

Describe the three states of matter and their properties.

The three states of matter are solid, liquid, and gas. Solids have a definite shape and volume, with particles that are closely packed together and vibrate in place. Liquids have a definite volume but take the shape of their container, with particles that are loosely packed and flow past each other. Gases have neither a definite shape nor volume, filling the space of their container, with particles that are far apart and move freely. These states can change through processes like melting, freezing, evaporation, and condensation.

How does the digestive system break down food?

The digestive system breaks down food through a process that involves mechanical and chemical digestion. Mechanical digestion physically breaks down food through chewing in the mouth, churning in the stomach, and mixing in the intestines. Chemical digestion involves enzymes breaking down food into smaller molecules that can be absorbed by the body. This process starts in the mouth with salivary enzymes, continues in the stomach with gastric enzymes, and is completed in the small intestine with pancreatic and intestinal enzymes. The broken-down food molecules are then absorbed by the intestines and distributed throughout the body for energy and nutrition.

What are the differences between renewable and nonrenewable resources?

Renewable resources are natural resources that can be replenished over time, such as sunlight, wind, and biomass, while nonrenewable resources are finite and cannot be replaced once they are depleted, like fossil fuels and minerals. Renewable resources have a lower impact on the environment and are sustainable in the long term, while nonrenewable resources pose environmental risks, contribute to climate change, and can eventually be exhausted. Ultimately, the key distinction lies in their ability to be naturally replenished or not.

Explain the process of mitosis and cell division.

Mitosis is the process by which a eukaryotic cell separates its duplicated chromosomes to create two identical daughter cells. It consists of four main stages: prophase, metaphase, anaphase, and telophase. During prophase, the nuclear envelope degrades, and the chromosomes condense. In metaphase, the chromosomes align along the cell's equator. Anaphase involves the separation of sister chromatids to opposite poles of the cell. Finally, during telophase, the nuclear envelope reforms, and the chromosomes decondense. The cell then undergoes cytokinesis, dividing the cytoplasm to form two distinct daughter cells, each containing a complete set of chromosomes.

Describe the structure and function of DNA.

DNA, or deoxyribonucleic acid, is a double-stranded helical molecule that contains genetic information in the form of a code. It is composed of nucleotide units that consist of a phosphate group, a sugar molecule (deoxyribose), and one of four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). The sequence of these bases along the DNA strand encodes the instructions for building and maintaining an organism. Functionally, DNA serves as the blueprint for protein synthesis by encoding specific sequences of amino acids, regulating gene expression, and transmitting genetic traits from one generation to the next through the process of replication.

How do earthquakes occur and what causes them?

Earthquakes occur when there is a sudden release of energy in the Earth's lithosphere, causing seismic waves. This release of energy is usually triggered by the movement of tectonic plates along fault lines. The plates can collide, pull apart, or slide past each other, resulting in stress build-up that is eventually released as an earthquake. Friction between the plates and the irregular nature of fault lines can also contribute to the shaking and vibrations associated with earthquakes.

What is the greenhouse effect and how does it contribute to climate change?

The greenhouse effect is a natural process where certain gases in the Earth's atmosphere trap heat from the sun, leading to a warming of the planet. This process is essential for maintaining a livable climate on Earth. However, human activities, such as burning fossil fuels and deforestation, have increased the concentration of these greenhouse gases, particularly carbon dioxide, leading to an enhanced greenhouse effect. This heightened trapping of heat results in global warming and contributes to climate change by causing shifts in weather patterns, rising sea levels, and other detrimental impacts on the environment and ecosystems.

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