will the real certified teacher please stand up you're the next contestant on 240s are you smarter than the certification test surve says you want to prep for your Texas EC through6 science exam are you ready for the first question which of the following is a safe laboratory procedure many volatile compounds are quite toxic and can produce long- lasting health effects Fume hoods are designed to increase air flow to remove fumes and protect any lab occupant from inhaling them so this is the best answer remember to model safe habits in the lab and that's all I have to say about that which of the following accurately summarizes the difference between a hypothesis a scientific theory and a scientific law the best choice here is d a hypothesis is a predicted outcome a theory is a proposed explanation based on evidence and a law is a documented description of observations surrounding a phenomenon now you try to be the host as you do some assessment and instruction of your contestant I mean students which of the following statements best describes a formative assessment summative assessments are used to determine what students know at the end of the year or at the end of a unit but formative assessments measure what students know along the way they should be given on a regular basis now I don't have a big wheel to spin but I do have questions about other simple machines Jennifer moves her wheelchair up a ramp to enter a building the ramp she's using is an example of which simple machine while all the answers listed are simple machines an inclin plane or ramp is the example of a simple machine which increases the distance of travel but decreases the force needed now let's win some points on the subject of matter a solid gold bar is melted in a smelter which of the the following statements correctly compares the volume of the solid bar to the volume of the liquid gold volume is a measure of space occupied although both have the same number of molecules the heat needed to melt the gold increases the spaces between molecules in the liquid the liquid will have a greater volume so this is the best answer had enough of physical science let's move on to life science specifically let's change over to metamorphosis the diagram shows the life cycle of which of the following organisms the butterfly is the only organism listed that undergos complete metamorphosis which includes a pupa stage let's evolve the game over to Natural Selection pressures driving natural selection include all of the following except climate change available resources and Predator prey relationships all do Drive natural selection but equal populations of all organism Ms would not drive natural selection to occur so this is the best choice we don't have a scoring system so this next question on the rock cycle is worth as many points as you want pieces of broken rock often become cemented together to form a new rock this rock is referred to as this is the best answer sedimentary rocks are formed when sediments or pieces of broken rock are cemented together to form a new rock and last but not least how about we check out a question on the phases of the moon which of the following best describes the conditions of a full moon a full Moon occurs when the full face of the moon is illuminated by the Sun and visible from the earth so this is the correct choice this occurs only when the earth is between the Moon and the Sun ladies gentlemen and everyone in between I hope you've enjoyed practicing for the Texas EC through6 science with me today click the link in the description to take the full diagnostic test were you smarter than the certification test check out 240 tutoring.com to make sure the answer to that question is always [Music] yes