Grade 4 Dear Parents Please revise these worksheets with your children for the final exam on

Transcription

1 SCIENCE FINAL EXAM Grade 4 Dear Parents Please revise these worksheets with your children for the final exam on Wednesday 06 /06/ 2018 in addition the required pages in the books as follows: Unit 7 Properties of Matter Lesson 1: What are Physical Properties of Matter? Unit 8 Changes in Matter Lesson 1: What are some Physical Changes? Lesson 3: What are some Chemical Changes? Unit 9 Energy Lesson 3: What is Heat? The Answers are attached with the worksheet on the school website 1

2 Unit 7 Lesson 1 What are some Physical Properties of Matter? Q1] List 5 properties that describes the banana you eat: Q2] Measure the Volume of the Object 4 cm 4 cm 4 cm Q3] What is density? Name any 2 objects that are less dense than water. Q4] What is volume? Q5] How is mass of an object measured? 2

3 Unit 8 Lesson 1 What are some Physical Changes? Lesson 3 What are some Chemical Changes? Q1] Give difference between Physical change and Chemical change Physical Change Chemical Change Q2] Complete the following sentences with the help of the given words. mixture solution freezing evaporation 1) Seawater is a of solids that are dissolved in a liquid.. 2) A combination of two or more substances that keep their own properties is callled. 3) is the change in state of liquid to a gas. 4) The change in state of a liquid to a solid is. 3

4 Q3] Define:- A) Solute B) Solvent Q4] Name 3 solutions that you have in your home? 1) 2) 3) Q5] Identify each of the following as either a Physical change (P) or a chemical change (C) 1. You cut your hair. 2. Making a fruit salad. 3. Baking soda reacts with vinegar and forms a gas. 4. A piece of metal is bent in half. 5. Baking cookies. Q6] Circle the correct answers 1] Which of these changes is a chemical change? freezing melting rusting 4

5 2] Which of the following is a physical change? burning evaporation rusting Unit 9 Lesson 3 What is Heat? Q1] Answer the following questions 1) What is Heat? 2) What are the three different ways that heat can move from one place to another? 1) 2) 3) Q2] Write Conduction, Convection and Radiation in the blank spaces to show the type of Heat transfer. 5

6 CRITICAL THINKING QUESTIONS Q1] You put some water in the freezer, and it turns into ice. Is this a physical change? Q2] In a glass of iced lemonade, when will heat stop moving from the lemonade to the iced cubes? How much of ice will be left? 6

7 ANSWERS Unit 7 Lesson 1 What are some Physical Properties of Matter? Q1] The banana is soft, yellow and smooth. It smells sweet and it is small. Q2] Volume of the Box: Width x length x height 4 x 4 x 4 = 64 cubic centimeters Q3] Density is the amount of matter present in a certain volume of a substance (Mass/Volume). Objects that are less dense than water are: - Oil and Beach Ball Q4] Volume is how much space an object takes up. Q5] We use a pan balance to measure mass. 7

8 Unit 8 Lesson 1 What are some Physical Changes? Lesson 3 What are some Chemical Changes? Q1] Physical Change A physical change is a change in which a new substance is not formed. Example- Cutting of paper Chemical Change A chemical change takes place when a substance changes into a new substance. Example- Burning of paper Q2] 1) Solution 2) Mixture 3) Evaporation 4) Freezing Q3] A) Solute: The substance that diisolves into a solvent B) Solvent: The substance that dissolves a solute. Q4] 1) Apple Juice 2) Shampoo 3) Liquid dish soap Q5] 1. Physical change (P) 2. Physical change (P) 3. Chemical change (C) 8

9 4. Physical change (P) 5. Chemical change (C) Q6] 1] rusting 2] evaporation Unit 9 Lesson 3 What is Heat? Q1] Heat is energy which moves from an abject with a high temperature to the one with a lower temperature. Heat moves from warmer objects to a cooler object. Q2] 1) Conduction 2) Convection 3) Radiation Q3] 1. Convection 2. Conduction 3. Conduction CRITICAL THINKING QUESTIONS Q1] Yes, the water s state of matter changed but still it is water, no new substance is formed. It is a physical change. Q2] When the ice and lemonade are the same temperature. None of the ice will be left because it will have melted 9