1) Students investigate force. The masses they use begin at rest on the ramp. The setup the students use is shown. Which change will reduce the amount of force needed to move the masses? a) Decrease the height of the ramp b) Increase the height of the ramp c) Add an additional mass d) Pull the spring scale with two hands 2) Students design an experiment to determine how much force is needed to move blocks of wood of different masses slowly across a lab table. Which procedure should students include in their design? a) Conduct five trials, using a different scale to pull each block of wood b) Conduct five trials, pulling a different side of each block each time c) Conduct five trials, using a different table for each trail d) Conduct five trials, pulling each block of wood in the same way for each trial 3) Students drop the same heavy ball onto identical blocks of soft clay from different heights. For each height they measure the depth of the dent the ball makes in the clay. Why is the depth of the dent different in each trial? a) The size of the ball changes. b) The material of the ball changes. c) The mass of the ball when it hits the clay changes. d) The force of the ball when it hits the clay changes. 4) A student conducts the investigation shown in the diagram. In this experiment a paper cup hangs from a string tied to a single uncooked spaghetti noodle. The student measures and records the mass of a penny. The student then adds pennies to the paper cup one at a time. Which question is the student most likely trying to answer with this investigation?  a) How many spaghetti noodles will it take to hold up the mass of a penny? b) How much force will it take to break the spaghetti noodle? c) How long should the string that holds the paper cup be in order to support the greatest mass of pennies? d) How does the distance between the two chairs affect the amount of force it takes for the spaghetti noodle to break? 5) Some students attach a balloon to a straw and then tape the straw to the top of a toy car. The students inflate the balloon and release the car. The car travels 40 centimeters across the floor. What should the students do to determine whether the force of the air from a balloon is enough to push the car 40 centimeters across the same floor in repeated trial? a) Test the car several times using an identical balloon filled with different amounts of air b) Test the car several times using different-sized balloons filled with the same amount of air c) Test the car several times using an identical balloon filled with the same amount of air d) Test the car several times using different-sized balloons filled with different amounts of  air 6) Students conduct experiments to investigate friction. Which experiment will best test the effect of friction on objects? a) Drop two balls from the same height at the same time b) Roll two marbles on the carpet from the same starting point at the same time and with the same amount of force c) Roll three marbles across three different surfaces from the same starting point at the same time and with the same amount of force d) Release two balls from the top of a ramp at the same time 7) A student uses a spring scale to pull a 50-gram block horizontally across a wood desk. Then the student pulls the block the same distance across surfaces of carpet, sandpaper, and glass. Which question is this investigation most likely designed to answer?  a) How do blocks of different sizes react to force? b) How do different surfaces affect the amount of force needed to move a block? c) How do blocks affect spring scales? d) How does the mass of a block change when it is pulled across a desk? 8) A student designs an experiment to test the force of a spring using a spring launcher and four spheres with the same diameter but with different masses. What other piece of equipment would be most useful for this experiment? a) A graduated cylinder to measure the volume of each sphere before the sphere is launched b) A beaker to collect the spheres after they are launched c) A stopwatch to measure how long it takes to load each sphere on the spring d) A meter stick to measure the height each sphere reaches after the sphere is launched

Experimental Design - Effects of Forces STAAR Quiz (5th Grade Science)

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