Forces And Motion Unit Test - Weebly

Unit 4Name DateEdit FileForces and MotionUnit TestWhat term identifies a force that opposesmotion and acts between two objects thatare touching?Vocabulary and ConceptsA push and a pull are two examples ofwhich of the following?balanced forcea forcegravitya powerfrictiona law of motionunbalanced force5.6Da balanced force5.6DWhich term names a force of attractionbetween two objects, even if they are nottouching?balanced forcegravityfrictionunbalanced force5.6DWhich of the following gives the definitionof balanced forces?Four students used spring scales tomeasure the force needed to pull blocksmade of different materials up a smoothramp. All of the blocks moved at the samerate. The students recorded the forceneeded to move the different blocks: 6 N,8 N, 7 N, and 5 N. When the studentsanalyze this direct evidence, which of thefollowing is a reasonable explanation theycould construct for why the blocks requireddifferent amounts of force?The blocks all had different masses.The blocks all had the same mass butdifferent sizes.The blocks had the same mass, butthe force of gravity changed.Each student exerted the same force,but the friction was different.a sudden shift in accelerationa continuous downward forceforces on an object that are equalin size and opposite in directionforces on an object that causea change in motion5.2D5.6DWhich of the following terms identifies acause of a change in motion?weightmass and forcebalanced forcesunbalanced forces5.6DUnit Test Houghton Mifflin Harcourt Publishing CompanyAG 62Grade 5 Assessment Guide

Name DateSuri tapes batteries to three identical toycars to give them different masses. Then,she measures how far each car rolls whenshe launches it from the same startingpoint using the same stretched rubberband. The three toy cars are pictured in thefollowing illustration.How will the force of the rubber bandaffect the cars?Car 3 will travel the longest distance.Car 1 will travel the shortest distance.Car 1 will be the least affected by theforce acting upon it.Car 3 will be the least affected by theforce acting upon it.5.2DA spring scale measures force.massgravityweightTwo race cars with the same mass startedmoving on a race track at the same time.One car reached the finish line of the trackin 15 seconds, and the other reached thefinish line in 20 seconds. Why did the carstake different amounts of time to reach thefinish line?The force of gravity slowed one car,but not the other car.The slower car did not experienceany force, so it moved more slowly.The forces on one car were balancedand on the other car unbalanced.The engine of the faster car exertedmore force than the engine of theslower car.5.2DMindy wants to investigate one variable inher experiment—the average distance thateach of six friends can throw a ball. Sheasks friends of similar sizes and ages tothrow a ball as far as possible from thesame starting point. Mindy notices that onefriend throws the ball much farther thanthe others do. She wants her results to beaccurate. Which statement describes whatMindy should do?Repeat the experiment for the personwith the unusual result.Repeat the experiment using adifferent friend as a replacement.Repeat the experiment and ignore theresults of the first experiment.Repeat the experiment two moretimes, and find averages for each ofthe six throwers.What is the force that causes the readingon the spring scale shown in theillustration?frictionUnit 45.2A, 5.2E5.2AUnit Test Houghton Mifflin Harcourt Publishing CompanyAG 63Grade 5 Assessment Guide

Unit 4Name DateThis spring scale is measuring the force ona block hanging from the hook.Analyze what would happen on the scale ifan identical second block were added tothe hook. What would be the new reading?2.2 N4.4 N2.2 g4.4 gA rock is balanced on the side of a long,sloping hill. Although the rock is veryheavy, a gentle push causes it to startmoving down the slope. How can a smallforce cause a large mass to move?The direction of the force isimportant but not the amount offorce.The push on the rock increases theamount of friction, so the rock startsto move.The small push balances the forcesthat are keeping the rock in place andcauses it to move.At first, the forces on the rock arebalanced, but a small additional forcecauses them to be unbalanced.5.2D5.4AWhen balanced forces act on an object,the objectFour forces are acting on the block shownin the following illustration: F is the applied force.speeds up Ff is friction.slows down Fg is the gravitational force.changes its direction of motion Fn is the normal force—the upward pushof the table on the block.experiences no change in motion5.2DIf force F is applied to the block and itdoes not move, which statement is true?F and Ff are equal.F and Fg are equal.Ff is greater than F.Fg is greater than F.5.2DUnit Test Houghton Mifflin Harcourt Publishing CompanyAG 64Grade 5 Assessment Guide

Name DateThe following table shows the masses offour different wooden blocks and theforces that are affecting them.Block e (N)24242424Jane likes to play many types of sports.During the course of a week, she goesbowling and plays soccer, baseball, andvolleyball. Jane thinks the bowling ballrequires the most force to move. Whywould it require the most force?Friction(N)6666It has the most mass.She has to throw it indoors.She has to hold it in her hand.Which block will have the greatestacceleration?It has the largest circumference.5.2Dredbluegreenyellow5.2DWhich of the following is the best testablehypothesis about the effect of a force on anobject’s motion?You can use a triple beam balanceto measure the force applied to anobject.Objects that look heavy exertmore force than other objects.Objects will stop becauseof gravitational force.The force needed to move an objectdecreases as the object’s massdecreases. Houghton Mifflin Harcourt Publishing CompanyKatie sits on the ground and rests herhands on a bowling ball in front of her.She uses all her force to push the bowlingball away from her body. Next, Katie restsher hands on a soccer ball situated in frontof her at the same location. She uses all herforce to push the soccer ball away from herbody. How does the movement of the twoballs contrast?The soccer ball moves a greaterdistance because more force is actingon it.The soccer ball moves a greaterdistance because it has less mass.The bowling ball moves a greaterdistance because it has more mass.The bowling ball moves a shorterdistance because less force is actingon it.5.2D, 5.6DUnit TestUnit 4AG 655.2DGrade 5 Assessment Guide

Unit 4Name DateApply Inquiry and Review the Big IdeaExplain what happens to the motion of an object when it experiences a balanced force.Ken pulls his little brother in a wagon. Next, Ken tries to pull his dad in the wagon. He cannotmove the wagon. Explain why this happens. Use the words force and mass in your answer.5.2DThe illustration shows an experiment Sonya is doing in which she pulls the mass to the right inthe direction of the arrow labeled F.The spring scale shows a positive reading, although the object does not move. What wouldbe a question Sonya could ask to reach a reasonable conclusion about this experiment?5.2B, 5.4AThe following table shows the relationship of the forces applied to a certain object and the accelerationthat results from each force. Fill in the grid to show the acceleration that is missing from column 2.Forces (N)125810Acceleration (m/sec2)0.51.04.05.05.2DUnit Test Houghton Mifflin Harcourt Publishing CompanyAG 66Grade 5 Assessment Guide

forces on an object that are equal in size and opposite in direction forces on an object that cause a change in motion 5.6D Which of the following terms identifies a cause of a change in motion? weight mass and force balanced forces unbalanced forces 5.6D What term identifies a force that opposes motion and acts between two objects that