Physical Science Final (Pena) QUESTIONS & ANSWERS, SOLVED 100% CORRECT!!
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Course
Physical Science
Institution
Physical Science
Which statement about an element's average atomic mass is correct? - c. It is a weighted average,
so common isotopes have a greater effect than uncommon ones.
Which statement about the atom's nucleus is correct? - b. The nucleus is made of protons and
neutrons and has a positive charge
What is ...
PENA PHYSICAL SCIENCE HONORS
MIDTERM
Explanations of natural phenomena supported by large amounts of data are called __________. -
theories
The transfer of energy through matter by the direct contact of particles is called __________. -
conduction
What occurs when the expectations of a scientist change how the results of an experiment are viewed? -
bias
How are a hypothesis and a theory similar? - They are attempts to explain natural phenomena.
____________ is the application of science to help people. - Technology
A(n) _________ is a well-organized procedure that tests an idea. - experiment
A(n) _________ is something that represents an idea or object to help people better understand it. -
model
The SI base unit of length is the __________. - meter
Which variable in an experiment is specifically changed by the scientist? - independent variable
A(n) _________ is a prediction or explanation that can be tested by experimentation. - hypothesis
, A rope is 440 cm long. How long is it in millimeters? - 4400 mm
A rope is 440 cm long. How long is it in meters? - 4.4 m
A rope is 440 cm long. How long is it in kilometers? - 0.00440 km
A pencil is 120 mm long. How long is it in centimeters? - 12 cm
A pencil is 120 mm long. How long is it in meters? - 0.12 m
A pencil is 120 mm long. How long is it in kilometers? - 0.00012 km
A shuttle is flying at an altitude of 320 km. How high is it in meters? - 320,000 m
A shuttle is flying at an altitude of 320 km. How high is it in centimeters? - 32,000,000 cm
Kris walks at a distance of 1.2 km to school. How far is it in meters? - 1200 m
Kris walks at a distance of 1.2 km to school. How far is it in centimeters? - 120,000 cm
Newton's first law of motion states that __________. - an object will remain at rest or keep
moving unless a force acts on it.
_________ is the change in velocity divided by the time needed for the change to occur. -
Acceleration
Any change over time is called a(n) _______. - rate
Average speed is found by _________. - dividing the total distance traveled by the total time.
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