PHYSICS T1 Test 1
In the 17th century, science started to be able to be...
- Modeled - Analyzed - Described mathematically
Why is the conclusion of the scientific method important?
- it tells you if your hypothesis was right or wrong - it tells others the result of your experiment - it leads to a new hypothesis
What makes a good hypothesis?
- it's testable - it's an educated guess - it can change if proved wrong
How close your measurements come to the accepted value
Accuracy
If a room is measured once to its exact dimensions then we have done it with _____.
Accuracy
ACCURATE, PRECISE, BOTH, OR NEITHER: You do an experiment and get a wide array of numbers but the average is 9.8m/s^2.
Accurate
A hypothesis is...
An educated guess
ACCURATE, PRECISE, BOTH, OR NEITHER: All of my data points are the same and near an accepted value
Both accurate and precise
ACCURATE, PRECISE, BOTH, OR NEITHER: You shoot at a bulls eye with arrows. You get all of them in the bullseye.
Both accurate and precise
The last digit of any measurement is...
Estimated
TRUE OR FALSE: Hypothesis' are always correct
False
TRUE OR FALSE: Laws are the same things as theories.
False
TRUE OR FALSE: Most scientists will do an experiment just once and have enough data to prove their hypothesis is correct
False
TRUE OR FALSE: Physics is called the basic science because it's an easy subject
False
TRUE OR FALSE: There are 4200 seconds in one hour
False
Who is one of the scientists attributed with coming up with the scientific method?
Francis Bacon
Galileo Galilei (1564-1642)
Italian physicist
Hypothesis tested over and over without contradiction
Law/principle
What is sometimes referred to as the "language of science"?
Math
Leading zeroes in a decimal are _______
NOT significant
Trialing zeroes are ______
NOT significant
ACCURATE, PRECISE, BOTH, OR NEITHER: All my data points are the same.
Precise
ACCURATE, PRECISE, BOTH, OR NEITHER: You try to measure the melting point of gold. You do the experiment 10 times and always measure 213 degrees Celsius.
Precise
ACCURATE, PRECISE, BOTH, OR NEITHER: Your teacher tells you that acceleration due to gravity on Earth is 9.8 m/s^2. You do the experiment 10 times and measure 8.3 m/s^2 every time.
Precise
Every measuring device has a certain degree of _______
Precision
How repeatable your measurements are
Precision
If you measure a piece of wood 3 times and always find the same results you have ______.
Precision
Which step of the scientific method comes first?
Recognize a problem
A method of answering theoretical questions
Science
The study of living and non living things
Science
A synthesis of information that includes a well tested and verified hypothesis
Scientific theory
All nonzero digits are _____
Significant
All zeroes between non-zeros are ______
Significant
A method of solving practical problems using knowledge of science
Technology
Applying knowledge to create a tool is called...
Technology
Trailing zeroes are only significant if...
They are followed by a decimal point or to the right of it
TRUE OR FALSE: It is possible to be accurate but not precise
True
TRUE OR FALSE: It is possible to be precise but not accurate
True
TRUE OR FALSE: Physics is the study of the fundamental laws of nature.
True
TRUE OR FALSE: Scientific facts can be found not to be true
True
TRUE OR FALSE: Scientific facts have been known to change
True
TRUE OR FALSE: When multiplying two numbers, your answer should have the same amount of S.F. as the number with the least amount of S.F. that you're multiplying with
True