1) It causes objects to move or stop a) force b) resist c) movement 2) A word that means to oppose or slow down. a) force b) resist c) movement 3) It is what resistance can affect. a) force b) resist c) movement 4) It is an invisible force that can slow an object down or even cause it to stop. a) Force b) Air resistance c) Smoke 5) Which of the following can air resistance be harmful? a) Parachute slows down a skydiver b) fan blade pushes air away from the fan c) strong winds can destroy buildings d) fast vehicles uses more fuel 6) Which of the following can air resistance be helpful? a) Parachute slows down a skydiver b) fan blade pushes air away from the fan c) strong winds can destroy buildings d) fast vehicles uses more fuel 7) Which object has greater air resistances? a) b) 8) Which object has greater air resistances? a) b) 9) Which object has greater air resistances? a) b) 10) What tells where an object is going? a) position b) motion c) direction 11) What can cause a change in position? a) position b) motion c) direction 12) What word means place or location? a) position b) motion c) direction 13) True/False Air resistance can cause object to go faster. a) True b) False 14) The ___ and ____ of an object can be described by comparing it to other objects or to its background. a) direction and motion b) position and motion c) direction and position 15) Which pictures show motion? a) b) c) d) e) f) 16) What word describes a kind of force? a) force b) pressure c) air 17) What can cause an object to move? a) force b) pressure c) air 18) What is a kind of pressure that is invisible? a) force b) pressure c) air 19) __ is an invisible force that is all around us and can cause motion. a) air resistance b) air bubbles c) air pressure d) air balloon 20) what kind of air pressure means calmer weather? a) low pressure b) high pressure c) mid pressure 21) what kind of air pressure means stormy weather? a) low pressure b) high pressure c) mid pressure 22) What kind of air pressure that can create lift? a) Low pressure b) High pressure c) mid pressure 23) Which pictures of air pressure affecting movement? a) b) c) d) e) f) 24) What word can mean "to soak up"? a) reflect b) refract c) absorb 25) What word can mean "to bounce off"? a) reflect b) refract c) absorb 26) What word can mean "to bend light"? a) reflect b) refract c) absorb 27) True / False Absorbed light can produce heat and affect color. a) True b) False 28) Which objects can reflect light? a) b) c) d) 29) Which objects can refract light? a) b) c) d) 30) which color objects can absorb more light? a) b) c) d) 31) which color objects can absorb less light? a) b) c) d) 32) True / False We can only see the colors that are not absorbed. a) True b) False 33) What is one way heat is produced? a) energy b) physical c) chemical 34) Heat is a specific form of what? a) energy b) physical c) chemical 35) What is another way heat is produced? a) energy b) physical c) chemical 36) True / False Heat comes from chemical actions only. a) True b) False 37) Which are chemical actions that can produce heat? a) b) c) d) e) 38) Which are physical actions that can produce heat? a) b) c) d) e) 39) ___ can result in a different substance. a) Physical actions b) Chemical action 40) __ can produce heat without changing the substance. a) Physical actions b) Chemical action 41) What word can mean "to let go"? a) release b) absorb c) heat 42) What word can mean "to soak up"? a) release b) absorb c) heat 43) What is a type of energy that moves? a) release b) absorb c) heat 44) True / False Changes in matter mean energy is moving a) True b) False 45) Which change absorb energy? a) b) c) d) 46) Which change release energy? a) b) c) d) 47) What is one thing an atom can have? a) atoms b) charge c) static 48) What is everything on Earth made from? a) atoms b) charge c) static 49) What is a very simple form of electricity? a) atoms b) charge c) static 50) True / False Atoms have only negative particles a) True b) False 51) When particles "charge" atoms, it causes __ a) positive electricity b) negative electricity c) static electricity 52) True / False Atoms are usually neutral but can be charged. a) True b) False 53) __ determine the atom's charge a) protons b) electrons c) neutrons 54) Atoms with opposite charges ___ each other while atoms with same charges with same charges ___ each other. a) repel, attract b) attract, repel c) repel, do nothing with d) do nothing with, attract 55) When positive and negative charges are not equal, electrons move to restore balance and can cause __. a) static electricity b) current electricity c) negative electricity 56) Which shows static electricity? a) b) c) d) e) f) 57) What is another thing a circuit can be? a) a circuit b) open c) closed 58) What can help control electricity? a) a circuit b) open c) closed 59) What is one thing a circuit can be? a) a circuit b) open c) closed 60) True / False Circuits can be open or closed and can help control the movement of electricity. a) True b) False 61) A ___ circuit stops electricity. a) open b) closed 62) A ___ circuit lets electricity flow. a) open b) closed 63) Which picture shows a closed circuit? a) b) c) d) e) f) 64) Which picture shows an open circuit? a) b) c) d) e) f) 65) What affects how magnets react? a) magnetism b) attract  c) repel 66) What is another word that means "pull"? a) magnetism b) attract c) repel 67) What is another word that means "push"? a) magnetism b) attract c) repel 68) What are the two poles that magnets have? a) north b) east c) south d) west 69) __ is a force found in magnets a) magnetic b) magnets c) magnetism d) electricity 70) True / False All metals are magnetic. a) True b) False 71) Which pictures show a magnet being used to to attract? a) b) c) d)

G2 Q4 Science

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