Rawdah High School Name: ______________ Date: _______________ 2019/2020 Grade VI ( ) Time: 30 min. Science Quiz I. Decide whether each statement is true or false. Then, correct the false ones: (3.5pts) 1. _______ A reliable experiment can have 2 or 3 independent variables. ________________________________________________________________ 2. _______ Scientists MUST follow the scientific method to ensure valid results in an experiment. ________________________________________________________________ 3. _______ An independent variable is a change that occurs as a result of the 1 st change. This change usually takes place at the end of an experiment. ________________________________________________________________ 4. _______ In the Scientific Method step known as “Statement of the Problem,” the problem should always be written in question form. ________________________________________________________________ 5. _______ Research must always be conducted prior to forming a hypothesis. ________________________________________________________________ 1 II. Order and name each step of the scientific method: (3pts) III. Read each experiment and answer the following questions. (3.5pts) A student conducted the following experiment and measured the time needed for ice cubes to melt when placed in a water cup in each case. Study the data and then answer the question. Type of cup Number of ice cubes Temp. of water used plastic cup 4 60 C plastic cup 4 10 1. What are the independent and dependent variables in this experiment? ________________________________________________________ 2. Form a hypothesis to be tested by the above experiment. ________________________________________________________ 2 3