Space
Space is the vast expanse that exists beyond the Earth and its atmosphere. It is a fascinating subject of study that encompasses the stars, planets, galaxies, and other celestial bodies.
Key Concepts
- Galaxies: Huge collections of stars, dust, and gas bound together by gravity. The Milky Way is our home galaxy.
- Planets: Spherical bodies that orbit a star. The eight planets in our solar system include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
- Stars: Luminous spheres of plasma held together by gravity. Our Sun is a star.
- Astronomy: The scientific study of celestial objects and phenomena.
- Space Exploration: The investigation of outer space through the use of telescopes, space probes, and manned space missions.
Study Guide
Here are some key points to remember when studying space:
- What is a galaxy and what is our home galaxy called?
- List the eight planets in our solar system.
- What is a star and name our closest star?
- Define astronomy.
- What is space exploration and how is it conducted?
[Space] Related Worksheets and Study Guides:
.◂Science Worksheets and Study Guides Second Grade. Mammals and birds
Study Guide
Mammals and birds 
Activity Lesson
Birds & Mammals Worksheet/Answer key
Mammals and birds Worksheet/Answer key
Mammals and birds Worksheet/Answer key
Mammals and birds Worksheet/Answer key
Mammals and birds Vocabulary/Answer key
Mammals and birds
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
LIFE SCIENCE (NGSS)
Biological Evolution: Unity and Diversity
Students who demonstrate understanding can:
Make observations of plants and animals to compare the diversity of life in different habitats[Clarification Statement: Emphasis is on the diversity of living things in each of a variety of different habitats.] [Assessment Boundary: Assessment does not include specific animal and plant names in specific habitats.]