Question

Question
1
Question
2
Question
3
A)
How does the field of science gain knowledge and understanding?
(1 point)
by using the latest technologies
through deductive reasoning
through the testing of hypotheses
by making value judgements
A)
In which situation should gloves be worn in the laboratory?
(1 point)
when using a balance to determine mass
when chemicals are being used
when recording data using a computer
when filling a beaker with water from the tap
A)
What should be done if acid is accidentally spilled on bare skin?
(1 point)
a weak base should be applied to the area
lots of water should be flushed over the affected area
oil should be placed on the site of contact
soap should be used to clean the area
Question
4
Question
5
Question
6
A)
A student doing an experiment spilled some salt and sugar into the sink. How should thesesubstances be cleaned up?
(1 point)
sweep them up with your bare hands
use a match to burn them away
drop a weak acid on them to break them up
flush them with water down the drain
A)
A teacher had her students write down hypotheses about an experiment. Which is a validhypothesis?
(1 point)
earthquakes and tornados occur at the same time
If I water my plant daily, then it will grow faster
all living organisms are made from at least one cell
energy gets transferred among all the organisms of a food chain
A)
What type of evidence is needed for a hypothesis to be supported or not supported?
(1 point)
physical evidence
observational evidence
circumstantial evidence
demonstrative evidence
Question
7
Question
8
Question
9
A)
What do theories help scientists do?
(1 point)
prove hypotheses to be correct
determine if a claim is false
propose new ideas on the subject
explain large collections of data
A)
Which of the following statements does NOT describe changes to a theory?
(1 point)
theories change when new information and evidence is discovered
a theory can be changed if the results from only one experiment disagree with the theory
when new information and evidence is discovered, scientists reevaluate the validity of the theory
new findings can be incorporated into a more complete understanding of a theory
A)
Chemicals stored in a lab must have an SDS that gives information about the hazards of thechemical. What does SDS stand for?
(1 point)
Science Data Sheet
Safety Data Sheet
Safety During School
Question
10
Question
11
A)
In science class, a group of students were using a Bunsen burner to do a flame test on variouschemicals. Certain safety precautions should be followed to prevent injuries. Choose TWO safetyprecautions that must be followed.
(2 points)
It is ok to have your long hair down as long as you take precaution and do not get close to the flame
Keep your backpack on the lab table, but make sure it is zipped up
Keep the area around the burner clear of papers
Wear goggles at all times
A)
Choose the limitations of science that you learned about in this unit. (This is a 3 point question)
(3 points)
Scientific instruments are become more precise with technology advances
Science is always changing
Experiments get us close to natural events, but cannot replicate them exactly
Science is not capable of making value judgements
Question 12
Question 13
Question 14
Testable Nontestable
If I replace the battery in my car, then my car will get better gas mileage.
The aroma of flowers is more pleasant than that of burning leaves.
If two balls of different masses are dropped from the same height, then they will reach
the ground at the same time.
A) Label the hypotheses as testable or non-testable. (3 points)
A testable statement made before any experiment begins is a . An explanation that is generally
accepted as true after many experiments and much data has been analyzed to support it is a A
needs evidence to support it.
A) Choose the correct answer for each blank. (3 points)
A) In 2 sentences,Explain one similarity and one difference between scientific theory and scientific
hypothesis. (2 points)
0 / 10000 Word Limit
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Answer 1

Here are the answers:

1) through the testing of hypotheses

2) when chemicals are being used

3) lots of water should be flushed over the affected area

4) flush them with water down the drain

5) If I water my plant daily, then it will grow faster

6) observational evidence

7) explain large collections of data

8) a theory can be changed if the results from only one experiment disagree with the theory (this statement does NOT describe changes to a theory)

9) Safety Data Sheet

10) Keep the area around the burner clear of papers; Wear goggles at all times

11) Science is always changing; Experiments get us close to natural events, but cannot replicate them exactly; Science is not capable of making value judgments

12–14) Label testable/nontestable:
- If I replace the battery in my car, then my car will get better gas mileage. — Testable
- The aroma of flowers is more pleasant than that of burning leaves. — Nontestable
- If two balls of different masses are dropped from the same height, then they will reach the ground at the same time. — Testable

Fill-in:
- A testable statement made before any experiment begins is a hypothesis.
- An explanation that is generally accepted as true after many experiments and much data has been analyzed to support it is a theory.
- A hypothesis needs evidence to support it.

Short explanation (2 sentences):
- Similarity: Both a scientific hypothesis and a scientific theory are explanations used in science and must be supported by evidence.
- Difference: A hypothesis is a testable prediction made before experiments, while a theory is a well-supported, broader explanation developed from extensive evidence.