1. Unit 6: Living With Natural Forces Theme 12: The Science of Sports http://www.falkirkinthecommunity.co.uk/images/sports_science.gif

2. attempt- the act of trying to do something The first attempt at aviation was not quite as successful as hoped. http://static.howstuffworks.com/gif/bungled-personal-flight-attempt-1.jpg

3. courageous- brave Courageous people can be found all around us. http://www.people-search-global.com/search/mil2.jpg

4. athlete- someone who is trained in a sport Athletes spend much of their life training to become the best in their sport. http://larvalsubjects.files.wordpress.com/2008/11/schatz_howard_athlete_shawncrawf ord_pg185_l.jpg

5. estimate- to make a general but careful guess about something Can you estimate how many marbles are in this jar? http://www.tangischools.org/TTMath/Clip%20art/math_estimate.gif

6. friction- the force that slows the motion of two surfaces when they touch It takes a lot of friction to move a heavy box in an opposite direction. http://www.physics4kids.com/files/art/motion_friction1_240.jpg

7. reaction- a response to something The reaction of pushing off the ground is to move forward. http:/content.answers.com/main/content/img/oxford/OxfordSports/0199 210896.ground-reaction-force.1.jpg/

8. physical- something related to the body It is important to stay physical to avoid injuries in sports activities. http://www.ct.gov/dph/lib/dph/phho/physical_therapists/physical_therapy.jpg

9. movement- the act of moving or changing positions Movements in different directions do not always help the situation. http://www.robbinssports.com/sporting-goods-store/images/co-oper-band-group-creative- movement-kit.jpg

10. ability- a skill or talent The ability to climb a rock wall takes concentration and logical planning. http://www.sgsp.edu.pl/uczelnia/about/osgsp_img/osgsp6_1.gif

11. consequence- a result or outcome Many thieves do not think of the consequences when committing a crime. http://www.carolecgood.com/stealing_computer_5k.gif