Solve these clues to fill the grid.
- Four-wheeled vehicle for driving on roads
- 1 Across
- A group of machine parts that fit together to form a self-contained unit
- 4 Across
- A simple machine consisting of a circular frame with spokes that can rotate on a shaft or axle
- 7 Across
- Waste matter that contaminates the water or air or soil (plural)
- 8 Across
- The natural world around us
- 9 Across
- A volatile flammable mixture of hydrocarbons derived from petroleum
- 11 Across
- A word that is composed of parts from different languages
- 13 Across
- A wheeled vehicle consisting of a self-propelled ___ that is used to draw trains along railway
- 14 Across
- A shaft on which a wheel rotates
- 2 Down
- A solid bounded by a ___ surface and two parallel planes
- 3 Down
- Any substance that facilitates the use of a drug or pigment or other material that is mixed with it
- 5 Down
- A motor vehicle with four wheels
- 6 Down
- Relating to electric power or electric charges.
- 9 Down
- Bringing death
- 10 Down
- A substance that can be consumed to produce energy
- 12 Down
- A unit of inductance in which an induced electromotive force of one volt is produced when
- 13 Down