Science Kids: Matter and Energy in Organisms and Ecosystems

The video explores the concepts of matter and energy, emphasizing their importance in living organisms and ecosystems. It explains how food provides energy, the role of matter, and the process of photosynthesis in plants. The video also covers how animals obtain energy, the flow of energy in ecosystems, and the interdependence of organisms within food chains and webs.

What is the primary reason our bodies signal hunger?

• To suggest physical activity

• To signal the need for food

• To remind us to drink water

• To indicate the need for rest

Which of the following is NOT a characteristic of living organisms?

• Inability to consume energy

• Made of cells

• Ability to reproduce

• Ability to grow

What process do plants use to convert sunlight into energy?

• Digestion

• Metabolism

• Respiration

• Photosynthesis

What is the role of chlorophyll in plants?

• It provides nutrients

• It absorbs sunlight

• It stores energy

• It releases oxygen

How do consumers obtain energy?

• By decomposing organic matter

• By producing their own food

• By consuming other organisms

• By absorbing sunlight

What is the main function of digestion in animals?

• To absorb sunlight

• To store energy

• To break down food for nutrients

• To produce glucose

Which of the following best describes an ecosystem?

• A group of similar organisms

• A community of living and non-living things

• A collection of non-living things

• An area with only plants

What role do decomposers play in an ecosystem?

• They store chemical energy

• They produce energy

• They break down dead matter

• They consume living organisms

What does the law of conservation of energy state?

• Energy can be created and destroyed

• Energy is never destroyed, only changes form

• Energy is only used by plants

• Energy is stored indefinitely

Why is it important to understand the flow of energy in ecosystems?

• To reduce animal populations

• To predict weather patterns

• To appreciate the balance of nature

• To increase plant growth