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Across 4. s_____ is a small amount of something that you can use to find out what all of it is like. 6. m______ is a substance, for example plastic, leather, wood, stone, etc. that you can use to make things. 7. s_____ is a vehicle that can travel in space. 10. i______ is what you see in a picture, on television, etc. 12. m______ is a set of checks to find out how healthy you are. 14. a______ is a creature from another world. 15. r______ is a method of finding the position of things using radio signals.

Down 1. c______ is a bright object in the sky like a star with a tail. 2. p______ is someone who controls a plane when it is flying. 3. p______ is a piece of equipment like a wide piece of cloth over your head that you can use to come down to the ground after leaving a plane. 4. s_____ is someone who studies science. 5. i______ is a small animal with six legs, for example an ant. 8. t_____ is knowledge, equipment, methods, etc. in machines, for example computers. 9. b______ is a plastic bag filled with air or a gas that weighs less the air. 11. m______ is a piece of rock moving extremely fast in space that we see as a line of light in the sky. 13. s_____ is a small, bright light you can see in the sky at night.