SC 7th Grade Science Review

What is a chemical reaction?

• A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

• A chemical reaction is a biological process.

• A chemical reaction is a physical change in matter.

• A chemical reaction is a mathematical equation.

Explain the different types of ecological relationships.

• Cooperation

• Mutualism, Commensalism, Parasitism, Competition, Predation

• Symbiosis

• Predation

Describe the process of photosynthesis.

• Photosynthesis is the process of converting light energy into mechanical energy.

• Photosynthesis is the process of converting heat energy into electrical energy.

• Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose molecules.

• Photosynthesis is the process of converting sound energy into chemical energy.

How do ecosystems function?

• Ecosystems function through the interactions between plants and minerals only.

• Ecosystems function through the interactions between inanimate objects only.

• Ecosystems function through the interactions between living organisms and their physical environment.

• Ecosystems function through the interactions between humans and animals only.

What are natural resources and give examples.

• Oil, sunlight, soil

• Gold, wind, coal

• Plastic, glass, paper

• Water, air, minerals, forests, wildlife

What are synthetic materials and provide examples.

• Synthetic materials are man-made substances created through chemical processes. They are designed to have specific properties for various applications. Examples include polyester, nylon, acrylic, and polyethylene.

• Natural materials are substances found in nature and not altered by humans.

• Examples of synthetic materials include wood, cotton, and leather.

• Synthetic materials are only used in food production.

Discuss the structures and processes of organisms.

• Structures of organisms include rocks, clouds, and buildings.

• Structures of organisms include cells, tissues, organs, and organ systems, while processes involve functions like metabolism, growth, reproduction, and response to stimuli.

• Organisms are made up of unicorns, dragons, and fairies.

• Processes of organisms involve dancing, singing, and painting.

Explain the concept of matter in science.

• Matter in science is anything that has color and occupies space.

• Matter in science is anything that has mass and occupies space.

• Matter in science is anything that has weight and occupies time.

• Matter in science is anything that has volume and occupies energy.

Define energy and its importance in science.

• Energy is a human-made concept with no real significance.

• Energy has no impact on the universe.

• Energy is the ability to do work and is crucial for all processes and transformations in the universe.

• Energy is only relevant in certain scientific fields.

How are matter and energy related in scientific terms?

• Energy is a form of matter in scientific terms.

• Energy and matter are related through the principle of mass-energy equivalence.

• Energy and matter are unrelated in scientific terms.

• Matter can be created from energy in scientific terms.