The summary at the end of an experiment that explains the results is called the ...
conclusion
Which of the following is NOT a safe laboratory procedure?
wearing goggles when working with chemicals
pulling back long hair and baggy clothing
picking up broken glass with your hands
cleaning all equipment after it is used
washing your hands at the end of an experiment
picking up broken glass with your hands
Scientists are able to make observations and infer about their surroundings by using their ...
5 senses
The instrument used to measure the mass of an object is called
a Triple Beam Balance
What is the correct formula for calculating density?
Density = mass/volume
In a controlled experiment, how many independent variables can be worked with at a time?
One
If you have been injured during a lab, the first thing you should do is...
State whether the following statement is an observation or an inference.
There are four penguins shown in the picture.
Observation
What is the basic unit of liquid volume in the metric system?
Which box has a higher density?
Box A
A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?
heart rate
Correct the statement to make the statement true:
Laboratory work may be started immediately upon entering the laboratory even if the teacher is not yet present.
Laboratory work should not be started immediately upon entering the laboratory even if the teacher is not yet present.
Turn the following statement into an inference.
The penguins are standing on snow and ice.
It must be cold.
They are located somewhere cold.
Answers may vary.
What is the measurement on the triple-beam balance shown? With units!
335g
Put the liquids in order from most dense to least dense?
4, 3, 2, 1
When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?
Independent Variable
The following activity is permitted in the laboratory:
A. chewing gum
B. eating
C. drinking
D. None of the above.
D. None of the above.
Observe the image and make one observation and one inference based on your observation from the image.
1 observation (5 senses)
1 inference (explaination)
A graduated cylinder contains exactly 60 mL of water. A rock was dropped into the cylinder of water. The water level rose to 86 mL. What is the volume of the rock?
26 mL
(answer must include units!)
An object with which of the following densities will float on water?
0.7 g/cm3
1.2 g/cm3
3.5 g/cm3
11.4 g/cm3
0.7 g/cm3
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
The type of liquid
Identify 2 unsafe lab procedures from the image below and how to correct them.
Identify 2 scenarios AND how to correct them.
Observe the image below.
Make 2 quantitative observations, 2 qualitative observations and one inference based on your observations.
A student used a metric ruler to measure the sides of a block of wood. The measurements were measured as 3.54 cm, 2.7 cm, and 4.85 cm. Calculate the volume of this piece of wood. To the nearest hundredth place with correct units.
46.4cm3
The diagram below represents a solid object with a mass of 325 grams. Determine the density of the cube to the nearest TENTH.
2.0 g/cm3