Check Point – Earth Spins ad Life Cycles 1. What Unit is used to measure forces? 2. What instrument is used to Measure Forces? 3. What type of information does the situation below provide? 4. Friction is a force that __________________ the motion of an object. 5. Friction is affected by: - _____________________________ and ________________________________ 6. List the 4 different Types of Friction: 7. Name the Type of friction shown below: 8. ______________________ are materials that reduce the amount of friction By Getting In between two ________________. Like oil, water, or grease. 9. Friction moves in the _______________________ direction of motion. 10. The friction of an object at rest is called _________________ friction. 11. The friction of two solid surfaces moving over each other is called ________________ friction. 12. The friction caused by moving through liquids and gases is called _____________ friction. 13. Friction is affected by ________________ and how ______________ they are pushed together. 14. To reduce friction a ______________________ is used. 15. Without ___________________ motion could not occur. 16. Which law is which: ______________a). For every action there is an equal and opposite reaction ______________b.) An object in motion stays in motion and an object at rest stays and rest until acted on by an unbalanced force. ______________c.) Force = mass x acceleration 17. Forces always act in ________________. 18. Look at the following picture and name the Law that explains what occurred. 19. Earth’s Axis is _______________ (by ____________) and this causes the ________________. 20. The sun is the source of ______________ and ______________ on Earth. 21. Look at the Picture below and Name the season currently occurring in the southern Hemisphere: 22. The rise and fall of Earth waters are known as the ____________________, and are caused by the Interaction of ___________________ from the alignment of the moon, sun, and Earth. 23. Name the tides in a, b, and c, below: 24. Explain what and how waves occur. 25. Explain what and how tsunamis occur. 26. A repeating pattern in nature is known as a ______________________ 27. A biological clock is an internal _____________________ that keeps organisms in step with _________________________. 28. Organisms active during the day are called ____________________, whereas organisms active during the night are called ______________________. 29. Any rhythm controlled by the moon is a ________________ rhythm, for example __________________ rhythms. 30. List 3 examples of annual rhythms are _______________________, ______________________, and ________________________. 31. Know the location of the 3 major climate zones! Answer Key 1. 2. 3. 4. 5. Newtons (N) Spring Scale Friction of the surface Friction is a force that opposes the motion of an object. Friction is affected by the amount of force pushing two surfaces together and the type of surface. 6. Static, Sliding, Fluid, Rolling 7. Rolling Friction 8. Lubricants get between two surfaces 9. opposite 10. static. 11. sliding 12. fluid 13. Surfaces and how hard 14. lubricant 15. friction 16. Which law is which: a) Law 3 b) Law 1 c) Law 2 17. Pairs 18. Inertia 19. Earth is Axis is tilted (by 23.5) and this causes the seasons. 20. The sun is the source of Energy and Warmth on Earth. 21. WInTER 22. Tides … Gravity 23. a. NEAP b. SPRING c. SPRING 24. Wave – because they are cause by WIND energy 25. Tsunami – because it is cause by an underwater occurrence like an earthquake 26. Rhythm 27. A biological clock is an internal TIMER that keeps organisms in step with ENVIRONMENT. 28. Organisms active during the day are called DIURNAL, whereas organisms active during the night are called NOCTURNAL. 29. Any rhythm controlled by the moon is a LUNAR rhythm, for example TIDAL rhythms. 30. examples of annual rhythms are MIGRATION, HIBERNATION, and ESTIVATION. 31. Red = Tropical; Orange = Temperate; Blue: Polar