1) Is a rapid chemical combination of a substance with oxygen a) Fermentation b) Combustion c) Magnetism 2) In order for something to burn, there must be: a) light, smoke and ash b) energy, heat and water c) oxygen, heat and fuel 3) Is combustion an exothermic or endothermic reaction? a) both b) exothermic c) endothermic 4) These are examples of fuel: a) candle, water and gas b) wood, gas and oil c) energy, gas and light 5) Is a chemical reaction where a substance changes because oxygen is added a) Oxidation b) Combustion c) Fermentation 6) Metals react with oxygen and water, they go ... a) rust b) burned c) wet 7) Does salt speed up oxidation? a) no b) sometimes c) yes 8) It occurs when there is no oxygen and involves microorganisms that transform into sugars a) Magnetism b) Fermentation c) Oxidation 9) These are examples of the uses of fermentation a) Cheese, yogurt and dough b) Water, salt and oxygen c) Sugar, oil and wood 10) Bacteria produces: a) Oxygen and heat b) Food and oxygen c) Lactic acid and carbon dioxide 11) Is any object that has a magnetic force a) Magnet b) Magnetism c) Permanent magnet 12) Magnet that always has a magnetic force that cannot be turned off a) Permanent magnet b) Induced magnet c) Natural magnet 13) Magnets that are found in nature a) Permanent magnet b) Natural magnet c) Man-made magnet 14) Magnet that only gives off a magnetic force for a period of time a) Permanent magnet b) Induced Magnet c) Man-made magnet 15) Permanent magnets made by the human a) Permanent magnet b) Induced magnet c) Man-made magnet 16) Every magnet has a) North and South Pole b) South Pole c) North Pole 17) The magnets come together because the opposite poles________ each other a) attract b) field lines c) repel 18) Identical poles ________ each other a) magnetic force b) attract c) repel 19) Gold and Silver are magnetic a) yes b) no c) sometimes 20) The cardinal points are... a) North, South, East and West b) North and South c) East and West 21) A compass always points towards the ... a) South Pole b) Both c) North Pole 22) It acts like a magnet, but only when an electric current flows through it a) Electricity b) Electrons c) Electromagnet 23) A magnetic field is produced when... a) electrones move in different directions b) electrones move in the same diretion c) there are no electrons 24) The hydrosphere is ... a) is the solid part of the Earth b) the liquid part of the Earth c) is the gaseous part of the Earth 25) The geosphere is ... a) the liquid part of the Earth b) is the gaseous part of the Earth c) is the solid part of the Earth 26) The atmosphere is ... a) is the gaseous part of the Earth  b) the liquid part of the Earth c) is the solid part of the Earth 27) These lines go vertically from the North Pole to the Soth Pole a) Meridians b) Parallels c) Geographic Coordinates 28) These lines go horizontally around the Earth a) Meridians b) Parallels c) Geographic Coordinates 29) The equator is a ... a) Meridian b) Parallel 30) These are two other famous parallels a) Norht Pole and Soth Pole b) East and Weast c) Tropic of Cancer and Capricorn 31) The Earth moves around on its own axis a) Rotation b) Sun c) Revolution 32) The Earth moves around the sun a) Rotation b) Axis c) Revolution 33) The revolution movement produces a) 24 hours b) Day and Night c) The four seasons 34) The rotation movement produces a) 365 days b) Day and Night c) The four seasons 35) The Earth takes _______ to complete one rotation a) 24 hours b) 4 seasons c) 365 days 36) The Earth takes _______ to complete one revolution a) 24 hours b) 8 months c) 365 days 37) Summer begins in ... a) June 21 b) March 21 c) September 21 38) Spring begins in ... a) March 21 b) June 21 c) September 21 39) Winter begins in ... a) June 21 b) December 21 c) September 21 40) Fall begins in ... a) March 21 b) December 21 c) September 21 41) In the past people used to think that the world was ________. a) spherical b) flat 42) They were the first people to find out that the world is spherical a) The Ancient Greeks b) The Roman Empire c) The Egyptians 43) He observed ships that sailed over the horizon disappeared a) Galileo Galilei b) Johannes Kepler c) Aristotle 44) He was the first person to use a telescope to observe the planets a) Aristotle b) Galileo Galilei c) Johannes Kepler 45) He improved the telescope by adding a better lens to it a) Johannes Kepler b) Galileo Galilei c) Aristotle 46) American astronaut Neil Armstrong becomes the first man on the moon a) 1957 b) 1969 c) 1963 47) A Russian dog called Laika was one of the first animals in space a) 1961 b) 1957 c) 1963 48) Russia launches the first satellite, Sputnik, into space a) 1961 b) 1957 c) 1963 49) Russian astronaut Yuri Gagarin becomes the first man in space a) 1961 b) 1957 c) 1963 50) Russian astronaut Valentina Tereshkova becomes the first woman in space a) 1961 b) 1957 c) 1963 51) What is the order of the four layers of Earth? a) Inner core, outer core, mantle and crust. b) Crust, mantle, inner core and outer core. c) Inner core, mantle, outer core and crust. 52) Is the center of the Earth. a) Outer core b) Inner core c) Mantle d) Crust 53) Is the layer around the inner core. a) outer core b) inner core c) mantle d) crust 54) Is the thickest layer and is made up of magma. a) Outer core b) Inner core c) Matle d) Crust 55) Is the top layer, thinner than the others and solid. a) inner core b) outer core c) mantle d) crust 56) Is made up of only one mineral: calcite a) Granite b) Marble 57) Is made up of: quartz, feldspar and mica a) Granite b) Marble 58) Are formed by the magma in the Earth´s mantle. a) Sedimentary rocks b) Igneous rocks c) Metamorphic rocks 59) Originally sedimentary rocks and transformed over the time by intense heat and pressure. a) Sedimentary rocks b) Igneous rocks c) Metamorphic rocks 60) Are formed by tiny pieces carried by rivers and settle at the bottom of lakes, seas, or oceans. a) Sedimentary rocks b) Igneous rocks c) Metamorphic rocks 61) When a mineral breaks into different flat surfaces. a) Luster b) Cleavage c) Fracture d) Hardness 62) This shows how difficult it is to scratch a mineral. a) Luster b) Cleavage c) Fracture d) Hardness 63) This shows how shiny or dull are minerals. a) Luster b) Cleavage c) Fracture d) Hardness 64) When a mineral breaks into different uneven surfaces a) Luster b) Cleavage c) Fracture d) Hardness 65) This is used to make cement. a) Quartz b) Gypsum c) Copper 66) This is used to make watches a) Quartz b) Gypsum c) Copper 67) This is used to make coins. a) Quartz b) Gypsum c) Copper 68) This is used in roofs of houses. a) slate b) marble c) chalk 69) This is used in floors. a) slate b) marble c) chalk 70) This is used to write things on the board. a) slate b) marble c) chalk

Science Challenge2

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