Strand i
What is the highest level can be achieved in this strand?
7-8
What is strand ii about?
about a testable hypothesis and explain it using scientific reasoning
How many variables there are in objective B, to be discussed in strand iii?
3 variables
IV
DV
CV
Mention four safety rules should be taken under consideration when working inside the lab
Teacher decide on the answer!
Fill in the blank with the correct command term :
Strand i: _________ a problem or question to be tested by a scientific investigation.
a-Explain
b-Describe
c-Define
b-Describe
True or false: in the hypothesis, use only :
Passive voice
State the formula! (the prediction part)
True
In the hypothesis, it is predicted (expected) that ....etc
Minimum number of values should be written for the IV
Five
Mention all steps needed to measure a mass of a certain chemical or substance over the digital balance?
Clean it
Place a filter paper
Tare it
Fill in the blank :
What is the effect of____________, _________ on the _____________.
Increasing,Decreasing /IV/DV
What are the two components of the hypothesis?
Prediction
Scientific reasoning
what should be the temperatures values in the following readings for the temperature as IV?
: ___, 20, ____, 30, 35,____,_____
15
25
40
45
Part 1: How many trials should be mentioned for the IV to be repeated for each value manipulated?
based on your answer in part 1: If you have 3 IV values, what is the total number of trials done for the investigation?
Three trials at least
9 trials as a total
Describe a research question for testing the effect of the temperature on the solubility of sugar in water !
Teacher decide on the answer!
What is the format of the hypothesis?
It is predicted/expected that, When the IV (increase / decrease) , then the DV will (increase / decrease), this is because ....etc
Mention 3 controlled variables and the tool can be used to measure all and keep controlled for an investigation of changing temperature to study the rate of reaction :
Teacher decide on the answer
Mention four tools that can be used to study the effect of temperature on the density of irregular piece of iron.
Digital balance
Measuring cylinder
Thermometer
Bunsen Burner, or water bath (source of heat)
Filter paper
Beakers
Piece of iron