CK-12 Physical Science Concepts - For Middle School

4.16 Einstein’s Concept of Gravity Einstein Explained It All In the early 1900s, Albert Einstein came up with a theory of gravit ...

http://www.ck12.org Chapter 4. Motion and Forces FIGURE 4.30 This diagram shows how Earth’s mass bends the “fabric” of space and ...

4.17 Acceleration Due to Gravity 4.17 Acceleration Due to Gravity Describe the acceleration of falling objects due to gravity. ...

http://www.ck12.org Chapter 4. Motion and Forces MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/f ...

4.17. Acceleration Due to Gravity http://www.ck12.org Mass and Acceleration Due to Gravity What if you were to drop a bowling ba ...

http://www.ck12.org Chapter 4. Motion and Forces 4.18 Projectile Motion Describe projectile motion and state when it occurs. Gi ...

4.18 Projectile Motion FIGURE 4.32 FIGURE 4.33 FIGURE 4.34 Q: How would you show the force of gravity on the cannon ball in theF ...

http://www.ck12.org Chapter 4. Motion and Forces by gravity. Explore More Play the game at the following URL by shooting the can ...

4.19 Orbital Motion 4.19 Orbital Motion Define orbital motion and explain why it occurs. Describe the orbits of Earth around th ...

http://www.ck12.org Chapter 4. Motion and Forces FIGURE 4.35 Orbital Motion of the Moon Just as Earth orbits the sun, the moon a ...

4.19. Orbital Motion http://www.ck12.org Summary Orbital motion occurs whenever an object is moving forward and at the same tim ...

http://www.ck12.org Chapter 4. Motion and Forces 4.20 Elastic Force Define elasticity and elastic force. Give examples of the u ...

4.20. Elastic Force http://www.ck12.org MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/flx/render ...

http://www.ck12.org Chapter 4. Motion and Forces A: When you pull on the band, it stretches but doesn’t break. The resistance yo ...

4.20. Elastic Force http://www.ck12.org a. elastic force. b. rigid structure. c. elastic limit. d. breaking point. Elastic rebo ...

http://www.ck12.org Chapter 4. Motion and Forces 4.21 Newton’s First Law Use skateboarding to explain Newton’s first law of mot ...

4.21 Newton’s First Law FIGURE 4.39 FIGURE 4.40 Video Break Laura learned how to use forces to start and stop her skateboard by ...

http://www.ck12.org Chapter 4. Motion and Forces MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/f ...

4.21. Newton’s First Law http://www.ck12.org FIGURE 4.41 MEDIA Click image to the left for use the URL below. URL: http://www.ck ...

http://www.ck12.org Chapter 4. Motion and Forces Review State Newton’s first law of motion. You don’t need to push off with a f ...