Across
- 6. basic property of matter carried by some elementary particles (example: electrons and protons).
- 8. the derived SI unit of force that imparts an acceleration of 1 metre per second to a mass of 1 kilogram.
- 10. the property of matter and radiation which is manifest as a capacity to perform work (such as causing motion).
- 11. the smallest particle of a chemical element that can exist.
- 14. one of the inferior planets and the second nearest to the sun, visible as a bright morning or evening star. Its surface is extremely hot (over 400°C) and is completely shrouded by dense cloud.
Down
- 1. a measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time. It is measured in metres per second
- 2. strength or energy as an attribute of physical action or movement.
- 3. the rate of increase of speed or the rate of change of velocity
- 4. the measurement of how tightly a material is packed together. It is defined as the mass per unit volume.
- 5. the third planet from the sun, the only planet on which life is known to exist.
- 7. the tendency of a body to preserve its state of rest or uniform motion unless acted upon by an external force.
- 9. the second smallest planet and the nearest to the sun.
- 12. a physical quantity expressing the amount of matter in a body.
- 13. one of a sequence of ridges or undulations that moves across the surface of a body of a liquid