5th Grade Science Flashcard Challenge

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What is the role of the heart in the circulatory system?

Back

The heart pumps blood throughout the body, supplying oxygen and nutrients to tissues and removing waste products.

Front

What is the boiling point of water at sea level?

Back

The boiling point of water at sea level is 100°C.

Front

How does the tilt of the Earth's axis affect the seasons?

Back

The tilt of the Earth's axis causes different parts of the Earth to receive varying amounts of sunlight, leading to the changing seasons.

Front

What is a hypothesis?

Back

A hypothesis is a proposed explanation for a phenomenon, based on observation, that can be tested through experimentation.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the function of the lungs in the respiratory system?

Back

The lungs facilitate the exchange of oxygen and carbon dioxide between the air and the bloodstream.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water evaporates, condenses, and precipitates back to the Earth.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.