What is a Year?

In science, a year is the time it takes for a planet to complete one orbit around its star. On Earth, a year is approximately 365.25 days long. This is the time it takes for the Earth to complete one full orbit around the Sun.

Study Guide:

Definition: Define a year as the time it takes for a planet to complete one orbit around its star.
Earth's Year: Explain that on Earth, a year is approximately 365.25 days long due to its orbit around the Sun.
Seasons: Describe how the Earth's orbit and tilt cause the changing of seasons.
Leap Year: Discuss the concept of a leap year and why it is necessary to account for the extra 0.25 days in Earth's orbit.
Other Planets: Explore how the length of a year varies on other planets in our solar system.

◂Science Worksheets and Study Guides Third Grade. Changes in matter

Vocabulary/Answer key

Changes in matter

The resources above cover the following skills:

Concepts of Physical Science: A student should understand and be able to apply the concepts, models, theories, universal principles, and facts that explain the physical world. A student who meets the content standard should:

Develop an understanding of the interactions between matter and energy, including physical, chemical, and nuclear changes, and the effects of these interactions on physical systems.