Monday Warm Up November 11

A teacher sets up an experiment using five jars like the ones shown below. The teacher keeps one jar unwrapped as the control. The other four jars are wrapped with equal thicknesses of four different materials. The jars are each filled with an equal amount of water that is 92°C. Students observe and record the water temperature in each jar after 10 minutes. The results are shown in the table. Which property of the materials wrapping the jars are the students most likely investigating? A State of matter B Thermal energy insulation C Thermal energy production D Ability to conduct electricity *STAAR Question 2013

Which of these changes to the electric circuit shown above will cause the light bulb to light up ? A Straightening the wire so that the current can flow more easily B Adding a switch and more wire so that the current can flow more easily C Turning one battery so that its positive end connects to the other battery’s negative end D Making the length of wire the same on both sides of the light bulb *STAAR Question 2013

Sound is made when the strings of a guitar are moved or plucked Sound is made when the strings of a guitar are moved or plucked. The sound comes from the guitar because the moving strings causes- A vibrations B electrical currents C heat energy D a magnetic charge

Students in class were asked to build a series circuit that will carry electrical energy and turn on a light bulb.. Which list contains all the materials the student needs to build this circuit? A a switch, copper wires, and a light bulb B a bell, iron rods, a battery, and string C a battery, copper wires, and a light bulb D a magnet, a battery, string, and a switch

Three different objects that use the same source of energy are shown Three different objects that use the same source of energy are shown. What is the energy source for these objects? A Light energy B mechanical energy C Sound energy D Electrical energy *STAAR Question 2013

A teacher wanted to help her students to understand how sound energy is created. She gave each student a pair of ear plugs and asked them to put them in their ears. She then played different objects to see if the students could hear them. Of course they could not. She asked them how they could tell if the object is making noise without taking the ear plugs out of their ears. Which of the following answers would allow the students to tell if the object is making a sound? A Feeling for any vibrations in the object B Feeling the objects for an increase in temperature C Observing the objects D Watching the object for light being produced