STUDENT NAME. Science- Grade 4. Read each question and choose the best answer. Be sure to mark all of your answers.

Transcription

1 FORMATIVE MINI ASSESSMENTS Third Grading Period February STUDENT NAME DATE Science- Grade 4 Read each question and choose the best answer. Be sure to mark all of your answers. Bobber #1 Bobber #1 Bobber #2? 1 A student ran a string through a ring on the bottom of a tank of water and up to a small bobber (bobber #1) on the surface. He did the same for a larger bobber (bobber #2). The student used 20 units of force to pull the first bobber down to the bottom of the container filled with water. If the same amount of force is used to pull the second bobber down, which drawing best shows the expected results? A C B D SAISD, TEA 04 Science FMA Feb 09 Page 1

2 2 A small ball of clay immediately sinks when dropped into a tub of water. When the clay is flattened and curved so that it resembles a boat, the clay floats in the same tub of water. What can we conclude about the clay from this investigation? F The clay became lighter when we shaped it into a boat. G The clay became heavier when we shaped it into a boat. H The clay was able to float once it was wet. J The clay will sink or float, depending on how it is shaped. 3 During a science lab, a group of students tested different items in both saltwater and freshwater to see which items would float and which items would sink. After seeing a plastic bead sink in the freshwater and float in the saltwater, one student remarked, "The bead is heavier in the freshwater." Her classmate corrected her by pointing out that A there was not enough buoyant force in the freshwater to keep the bead afloat B there was not enough buoyant force in the saltwater to keep the bead afloat C the buoyant force in the freshwater is equal to the buoyant force in the saltwater D the bead is heavier in the saltwater than it is in the freshwater Salt Water Some images 2004 JupiterImages 4 Using only the equipment above, which plan below is the best test to answer the question, What kind of water evaporates faster, saltwater or freshwater? F Pour some water in each beaker. Put one spoonful of salt in each beaker. Time how long it takes for each beaker to evaporate. G Pour 50 milliliters of water in each beaker. Put one spoonful of salt in each beaker. Place both beakers under the lamps and time how long it takes for each beaker to evaporate. H Pour 50 milliliters of water in each beaker. Put one spoonful of salt in one beaker. Place both beakers under the lamps and time how long it takes for each beaker to evaporate. J Pour water into one beaker. Put one spoonful of salt in one beaker. Place both beakers under the lamps and time how long it takes for each beaker to evaporate. SAISD, TEA 04 Science FMA Feb 09 Page 2

3 Use the diagram and the table below to answer question 5. 1st 2nd Weight in Water (Measured in Large Paper Clips) Name of Object First Second Aluminum Nut Students used a spring scale to measure the weight of an aluminum nut when placed in water. Using the information in the table, what would be a reasonable explanation for the object not weighing the same at each weighing? A Students did not place the objects on the pan the same way. B Students did not completely submerge the object both times. C Floating objects never weigh the same. D Sinking objects never weigh the same. 6 Which is the best safety rule when using water in the classroom? F Shoot water with a syringe into the trash can. G Splash water on electrical equipment. H Mix water with any powder. J Clean up floor water spills immediately. SAISD, TEA 04 Science FMA Feb 09 Page 3

4 Use the picture below to answer question 7. 7 Students did an investigation to determine which objects would sink and which objects would float. They constructed a table to show their results. Which table below shows their results? ball A rock nail B rock apple ball ball C rock nail rock D apple nail SAISD, TEA 04 Science FMA Feb 09 Page 4

5 8 The students weighed cylinders made of various materials with clips. The graph above displays the data collected. Which cylinder weighed less than the clay cylinder but more than the wood, polyethylene, and water cylinders? F The aluminum cylinder G The water and clay cylinders H The polyethylene cylinder J The acrylic cylinder SAISD, TEA 04 Science FMA Feb 09 Page 5

6 10 Students are trying to measure the force required to push a fishing bobber below the surface of the water. The science tools needed for measuring the force in this experiment would include Figure 1 Courtesy Oregon Department of Education 9 When the student releases the toy submarine filled with air A the submarine will rise toward the surface B the submarine will sink toward the bottom C the submarine will stay at the same level D one cannot tell what the submarine will do F spring scales to help measure the buoyant force G timers to measure how long the force is being applied H cameras to take pictures of the bobber going under the water J balances to measure the mass of the bobber before going under the water SAISD, TEA 04 Science FMA Feb 09 Page 6