Scientific Instruction Quiz Questions Flashcards
(139 cards)
When reading the volume of a liquid in a test tube, data measurements should always be taken from where?
Meniscus
Which of the following safety practices will be most applicable to first-grade science labs?
do not eat or drink in the lab
During which of the following investigations would it be critical for students to wear safety goggles?
All of the listed activities require safety goggles
When deciding to house a live animal in the classroom, the risk of a potential health hazard to the student or animal must be weighed against the educational value added. What guidelines must first be considered to address this potential hazard, prior to making a choice of getting the animal for the classroom?
the children that might be affected by allergic symptoms
Which of the following pieces of safety equipment is most important to use when students are performing an investigation mixing chemicals?
safety goggles
When examining the color and clarity of 1 gram of sugar in 30 milliliters of water, which of the following would be the best substitute for a test tube?
graduated cylinder
When is the best time to remind students about the lab safety rules?
immediately before the students begin an experiment
A multimeter would be needed for which of the following experiments?
comparing voltage changes after adding resistors to a circuit
Which one of the following tools would be most appropriate to measure both the velocity and acceleration of a toy car in a lab activity?
ticker timer
Which of the following would best help students learn to protect themselves against potential health hazards in the laboratory?
Require students to wash their hands after a lab experience
In a typical science class, the teacher selects and prepares the tools that will be used for lab measurement. Later in the year, after having had experience with various tools, would it benefit students to have a variety of tools available from which to choose rather than a preselected set of tools? Why or why not?
Yes, a variety of tools require the student to think about why a particular tool should be used
During an investigation on acids and bases, a bottle of diluted lemon juice spills onto the floor. What should the students do first?
notify the teacher
When instructed to do so, why should a student waft a chemical?
to smell it
An elementary student drops a beaker in the lab. Which of the following describes the best safety procedure for the teacher to follow when cleaning up the broken glass?
Use forceps to pick up the large pieces, a wet paper towel to pick up the small pieces, and place all of the pieces in a glass disposal container.
A spring scale would be the most beneficial for which of the following investigations?
showing that gravity is constant for objects with different masses
When determining the accurate measurement of a liquid, which piece of laboratory equipment would be best to find the liquid’s volume to the nearest milliliter?
graduated cylinder
A hot plate would be the most beneficial during which of the following investigations?
measuring how far rubber bands can stretch at different temperatures
Which of the following substances would be safest for use in a fifth-grade science experiment?
dish soap
Which of the following instruments would be most useful to find the volume of a very large textbook?
a metric ruler
Which of the following is the appropriate piece of safety equipment to use if chemicals are splashed in someone’s eye?
eyewash station
Which of the following should be done before using a triple beam balance to measure the mass of an object?
zero the balance
A sixth-grade teacher is preparing a solution of diluted acid for her students to use in the lab. How should she prepare it?
Calculate the needed acid and water. Pour the right amount of water into a graduated cylinder. Slowly swirl, adding acid to the water, until the right dilution is reached.
Which of the following pieces of lab safety equipment might be used in case of a chemical spill?
safety shower
Which of the following is the first step a teacher should take after obtaining a new chemical to use in a student lab?
reading the MSDS for the chemical