Across
- 4. Einstein's theory contradicting Newton's fixed laws of physics, that the values of space, time, and distance were not absolute but rather "relative" to the frame of reference of the observer (only the speed of light was constant/fixed)
- 6. Einstein's revision to his original theory of relativity that adds in the theory of gravitation--that massive objects and their gravity can cause distortions in space and time (commonly referred to jointly as space-time)
- 9. group of chemically connected atoms
- 12. moves oxygen-filled blood around the body
- 13. body organs shaped like big kidney beans where some of the waste products from your cells are sent to be filtered by nephrons
- 15. includes two kidneys, two ureters, a bladder and a urethra; main jobs are to remove waste from the body and regulate blood volume and pressure
- 17. little filtration units in the kidneys
- 18. chemical compound created by the process of respiration
- 19. number of protons in an atom
- 20. a chemical element that is required for humans to live
- 21. storage unit for urine until you urinate
Down
- 1. mass of a proton or neutron
- 2. the parts of the body that help get oxygen into the blood
- 3. same type of atom with different numbers of neutrons
- 5. number of protons plus the number of neutrons in an atom
- 7. two of the same type of atom bonded together
- 8. tubes attached to the kidneys through which urine travels to the bladder
- 10. in theoretical physics, the idea that reality is made up of vibrating strings smaller than atoms, electrons or quarks, which, as they vibrate, twist and fold, produce effects in many tiny dimensions that humans interpret as everything from particle physics to large-scale phenomena like gravity; presented as a possible "theory of everything" to describe all aspects of physics that can be observed but not explained by science
- 11. another name for atomic mass
- 12. bonding of two or more different kinds of atoms
- 14. a region of space-time where gravity is so strong that nothing, including light or other electromagnetic waves, has enough energy to escape it; the theory of general relativity predicts that a sufficiently compact mass can deform space-time to form one of these
- 16. tube through which urine comes out of the bladder