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WorksheetsBell-ringers for SC.6.N.1.1, SC.7.N.1.5 & SC.6.N.1.3
Total questions: 6
Worksheet time: 3mins
SC.6.N.1.1
Jorge is testing several solutions with litmus paper to find out if each solution is an acid or a base. Jorge knows that acids turn red litmus paper blue and that bases turn blue litmus paper red. Jorge recorded his results in the following table.
TESTING FOR ACIDS
Solution Effect on Red Litmus Paper Effect on Blue Litmus Paper
A None Turns red
B Turns blue None
C None None
D None Turns red
Which solutions did Jorge conclude were bases?
a. A and B
b. B and C
c. A and D
d. C
a
b
c
d
SC.6.N.1.1
A team of doctors is testing the effects of a new drug on sickle-cell anemia patients. The team organizes the patients into two groups. The experimental group is given the drug. The control group is given a placebo, or a substance that has no medicinal value. Neither group knows whether they received the drug or the placebo. Why is having a control group an important part of this experiment?
a. Scientists can determine the effects of the drug by comparing those patients that have been treated with the drug to those that have not.
b. By having two groups, it allows the scientists to have a larger sample size on which to test the drug.
c. It provides the patients with a choice of whether they want to take the experimental drug.
d. Scientists are able to study the effects of a second drug on the group that received the placebo.
a
b
c
d
SC.7.N.1.5
Geologists are studying a rock formation called Devil’s Tower. They want to know how and when it formed. Which method(s) would they most likely use to conduct their investigation?
a. making careful measurements of the size of the formation
b. observations of rock layers and dating of rock samples
c. controlled experiments on weathering rates of rock material
d. cataloging the wildlife living on or near Devil’s Tower
a
b
c
d
SC.7.N.1.5
An astronomer is investigating whether sunspot activity on the Sun’s surface affects weather on Earth. Which method would the astronomer most likely use to make measurements of sunspot activity?
a. controlled experiment
b. casual observation
c. modeling
d. systematic observation
a
b
c
d
SC.6.N.1.3
Sal is studying the solar system. He makes a physical model using different-sized foam balls to represent the planets. Which best describes why a physical model is a useful tool for studying the solar system?
a. Solar system models can be used to study a system that is too big to study directly.
b. A model of the solar system eliminates the need for scientists to study the solar system directly.
c. A model of the solar system provides an exact replica of the actual solar system, so scientists can experience what each planet is like.
d. A model of the solar system can provide more data about the solar system than direct observations.
a
b
c
d
SC.6.N.1.3
Carol wants to determine how a fertilizer will affect the growth of marigolds. Which best explains why Carol would choose to investigate this topic using an experiment rather than systematic observations?
a. Her research question requires comparison, not notation and measurements.
b. Her research question should be answered using samples that are in identical circumstances.
c. Her research question requires changing one variable to see how it affects others.
d. Her research question involves studying a system that is too large or dangerous to study directly.
a
b
c
d
