MPC - Crossword

1. The Earth ______________ on its axis.
3. Elements with the same number of protons but different number of neutrons.
4. Lightest element on the periodic table
5. A group of solar systems
9. The force that pulls objects towards each other. It is weaker on the moon.
12. Spontaneous disintegration of a parent nuclide into its daughter nuclide.
14. A substance that deforms and takes the shape of its container.
15. This bone is called the funny bone
18. Breakdown of food substances into simpler forms that can be absorbed and used.
19. Long-term atmospheric conditions (Humidity, rain, wind......)
20. The Earth ___________ around the sun.
21. Resistance that one surface object encounters when moving over another.
23. Emission of energy in the form of electromagnetic waves.
24. What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?
25. Process of splitting the nucleus of an atom into two or more smaller nuclei.

2. When i am stretched i must return to my original position because I must obey Hooke's law or else I will be deformed.
6. It can travel one place to another but it has no mass. It has a speed of 3*10^8
7. SI Unit of mass
8. You can find it in the sea, in hair and sound.
10. A substance that stimulates the body's immune system to produce immunity to a specific disease.
11. Spreading out of particles out evenly in a given space.
13. The force exerted by a fluid on an object immersed in it.
16. The process of an object changing its position. (starts with M and rhymes with ocean).
17. It is alive, it grows, with no lungs but needs air.
22. Diamond is made from _______________ atoms. Graphite is also made from it too.