STUDENT NAME DATE. Science Grade 3. Read each question and choose the best answer. Be sure to mark all of your answers.

Transcription

1 FORMTIVE MINI SSESSMENTS Third Grading Period February STUENT NME TE Science Grade 3 Read each question and choose the best answer. e sure to mark all of your answers. 1 Some students added sugar to three cups with 100ml of water in each cup. The water in each cup was a different temperature. They stirred each cup of water after adding the sugar. Their data is shown in the table. mount of Sugar (grams) Water Temperature ( ) Time to issolve (seconds) Which of these EST explains why the sugar dissolved at the rate it did? Sugar dissolves faster in water that is warmer. Sugar dissolves faster at room temperature. Sugar dissolves faster in smaller amounts. Sugar dissolves more quickly in water that is stirred. 2 Estimate and select the crystal that is closest to three centimeters long. SIS, TE 03 Science FM Feb 09 Page 1

2 Growing rystals Recipe ring 236 ml of water to a boil for 3 minutes. dd 1 cup of sugar and boil for 3 minutes. Pour into a glass container. Place a string, bolt and pencil as shown in the diagram below. 3 The Growing rystals Recipe set up as shown above is an example of a system. The parts of the system are labeled. Each part has an important role in the growing of a crystal. What is the role of the string and bolt? They keep the water level even in the container. They keep insects out of the sugar and water solution. They provide material for the crystals to attach to and grow on. They provide materials to measure the depth of the water. 4 Using the set up as shown above, sugar will go through 2 states of matter. Which 2 states of matter will the sugar go through during the crystal forming process? It is in a gas form and will change to a liquid form. It is in a liquid form and will change to a gas form. It is in a liquid form and will change to a solid form. It is in a solid form and will change to a gas form. SIS, TE 03 Science FM Feb 09 Page 2

3 Red Yellow Green R O Y G lue Orange 5 student was testing unknown white powders in her science class by adding water to the powders. She was using the chart above to conduct her tests. She always placed a small amount of the powder she was testing in a special spot and did not add anything to that powder. y doing this, she was able to see how the powder had looked before she added any liquids to it. The reason the student had a special spot of untested powder was to have some extra powder to add more liquid to if she wants to have something with which to compare the tested powders to test that powder with clean water to test that powder with salt water SIS, TE 03 Science FM Feb 09 Page 3

4 Vinegar Test Table olor of Unknown hemical Red Yellow Green lue Orange Results when Mixed with Vinegar issolves issolves oes not dissolve Fizzes and bubbles oes not dissolve 6 The students analyzed the data above to decide which unknown chemical when mixed with vinegar created a gas. They decided the unknown chemical that makes a gas when mixed with vinegar is 7 student has room-temperature water, sugar, flour and salt in cups on the desk. The student needs to ask a question for an experiment. Which question below is a well defined science question using only these materials? Which will dissolve faster in boiling water- sugar, flour or salt? Which will dissolve faster in room-temperature water- sugar, flour or salt? Will salt taste better? How much does water, sugar, flour and salt weigh? red yellow green blue SIS, TE 03 Science FM Feb 09 Page 4

5 8 group of students wants to know whether sugar will dissolve faster in cold water or hot water. The students have the tools shown below. sugar pots hot plate measuring cup sink The first step is to make sure an adult is present. Which of the following steps should the students do next? Pour 1 cup of sugar into each pot. Fill each pot with soda. Pour 1 cup of water into the bag of sugar. Fill the sink with water. SIS, TE 03 Science FM Feb 09 Page 5

6 9 Students must observe the pictures shown above and determine the state of matter that each student in the picture is trying to demonstrate. Which of the following results should they record? Student Solid Student Gas Student - Liquid Student Liquid Student Gas Student Solid Student Gas Student Liquid Student Solid Student Solid Student Liquid Student Gas Science ctivity Students mixed a spoonful of vinegar with a small amount of baking soda in a bowl. They wrote a description of what they observed. 10 Which of these should the student avoid while doing this activity? Using a metal teaspoon Using a plastic bowl Stirring the vinegar Tasting the mixture SIS, TE 03 Science FM Feb 09 Page 6