Scientific Instruction Quiz Questions Flashcards
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
During part of a lab activity, students need to let a solution evaporate to see if any solutes are left behind. Which of the following tools would be most appropriate for this purpose?
watch glass
Students are using rulers to measure the length of leaves from different species of plants. Which of the following describes the correct way to use a ruler to measure length?
Line up the zero mark of the ruler at one end of the leaf and record the value of the smallest tick mark closest to where the leaf ends.
Density is measured by using the formula mass/volume. In addition to a scale, which of these tools would be helpful in finding the density of a regular-shaped, solid object?
metric ruler
Which of the following is not a standard part of general expectations for a classroom pet?
having the animal evaluated by a vet to ensure safety and health
What must a scientist consider when deciding which tools to use to gather data?
the expected outcome of the investigation
Mr. Orlando is on the far side of the room when he sees a student mishandling equipment during a laboratory activity. Which of the following is the best first step Mr. Orlando should take to resolve the problem?
move closer to the student
A hand lens would be the most beneficial for which of the following investigations?
comparing metamorphic and igneous rocks
Which of the following are appropriate lab safety standards?
Select all answers that apply.
A first aid kit should be kept in the classroom.
Students should wear safety goggles when working with a flame.
Which of the following is recommended student behavior in a laboratory setting?
reading and following experiment instructions
Johnny wants to make a graph to display the amount of money the military spent over a period of time. Which graph would best display this data?
line graph
If 2.2 lb = 1 kg, and Mary weighs 120 lbs, how much does she weigh in kg?
55 kg
A third-grade class is working on a project about wildflowers. Each student uses a ruler to measure the diameter of different flowers. What is the advantage of requiring the students to perform each measurement three times with the same ruler?
it reduces random error
Mr. Grubb is teaching about accuracy and precision. He asks students to write an essay explaining the difference between the two. He gets a couple of essays that are two sentences long. How can he improve this?
give a rubric which clearly communicated expectations
Students in Ms. Weikel’s class are having difficulty remembering the metric unit prefixes. What should she do to help them remember the prefixes?
teach students a helpful mnemonic device
Which of the following best represents the diameter of a virus?
30 nanometers
Cheetahs regularly reach a top speed of 60 miles per hour. What is the top speed in feet per second?
88 ft/sec
Which of the following units is most appropriate to measure the volume of a solid?
cubic centimeters
You know that your height is 5 ft 3 in. A friend measures you three times and gets these results: 5 ft 10 in, 5 ft 9.5 in, and 5 ft 10.5 in. How can these measurements be explained?
low accuracy, high precision
Patricia is measuring the volume of a chemical in the lab using a graduated cylinder. She takes three measurements of the same volume, reading 40 mL, 35 mL, and 38 mL. She pours the chemical into a 50-mL beaker, and it reaches the 50-mL marking exactly. Which of the following descriptions of her data when using the graduated cylinder is most accurate?
low accuracy, low precison
Jamie needs to measure the diagonal of his computer screen for a project he is working on. What is an appropriate unit of measure he could use?
centimeters
Mrs. Stone has just finished teaching her students the difference between a line graph and a bar graph. She wants to evaluate if they have mastered this concept before the end of class. She plans to give them sets of data and then have them respond with the correct type of display. The best method to do this is:
give each student a wipe board so they can all answer independently
A school cafeteria offers 5 different meals and serves each meal on a set day of the week. A teacher takes a survey among her students of which of the 5 meals is their favorite. Which of the following should the teacher use to display the results of the survey?
a pie chart
Edward wants to make a plot that depicts his classmate’s favorite types of juice. Which of the following plots would be best suited for that?
pie chart
Which type of graph or chart would be best used to show comparisons between the volume of water drunk by athletes competing in two different sports?
bar graph
Suppose Mike’s actual weight is 165.5 pounds ±2 pounds. His scale says his weight is 164 pounds. What can be said about his scale?
it is accurate
Mckenzie wants to make a graph to display the kinds of pets the students in her class have. Which graph would best display this data?
bar graph
April wants to make a graph to display the amount of time it takes 25 employees to get to work in the morning. Which graph would best display this data?
stem and leaf plot
Mr. Bielenberg asks students to measure 5 different objects from home using different units of measurement. He does not receive a wide variety of objects. How could he improve this activity in the future?
give clear guidelines for expected objects
Which is the most appropriate unit to measure the height of the average adult human?
inches
Which of the following units represents the shortest distance?
nanometer
Which of the following is equivalent to 3 meters?
300 centimeters