6th_Unit 2 Review Flashcard

Front

What is photosynthesis?

Back

A process by which plants produce sugar using the energy of sunlight.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What does the tilt of Earth on its axis cause?

Back

It creates seasons by varying the angle of sunlight on different parts of Earth.

Front

What is the Law of Conservation of Energy?

Back

The overall amount of energy remains the same because energy cannot be created or destroyed.

Front

When does the Southern Hemisphere experience the coldest weather?

Back

When the South Pole tilts away from the Sun.

Front

What is the role of sunlight in photosynthesis?

Back

Sunlight provides the energy needed for plants to convert carbon dioxide and water into sugar.

Front

What is an example of a physical change?

Back

Melting ice is a physical change because it does not change the substance's chemical composition.

Front

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

Back

A physical change does not alter the chemical composition, while a chemical change does.

Front

What is the significance of the angle of sunlight?

Back

It affects the temperature and climate of different regions on Earth.

Front

What happens during energy transformations?

Back

Energy changes from one form to another, but the total amount of energy remains constant.