Phys Sci Ch 1: Question Preview (ID: 15787)


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Which of the following clocks offers the most precision?
a) a clock with only one hand to measure the hour b) a clock with only one hand to measure the minutes c) a clock with a hand to measure the hour and a hand to measure minutes d) with a hands for hour, for minutes, and for seconds
Timers at a swim meet used four different clocks to time an event. Which recorded time is the most precise?
a) 55 s b) 55.2 s c) 55.25 s d) 55.254 s
What are 6 centimeters equal to?
a) 600 meters b) 6/10 of a millimeter c) 60 millimeters d) 600 millimeters
There are 1660 megawatts of wind-generated electricity produced globally every year. This amount is equal to
a) 1,660,000 watts b) 1,660,000 kw c) 16,600,000 watts d) 166,000 kw
How is 0.00069 written in scientific notation?
a) 69x10^-5 b) 6.9x10^4 c) 0.69x10^-3 d) 6.9x10^-4
Which of the following is an example of a safe lab procedure?
a) 1000m/1 km b) 1 km/1000 m c) 100 m/1 km d) 1 km/100 m
Why are scientific models important?
a) tying back long hair and loose clothing b) eating or drinking from lab glassware c) touching hot objects with your bare hands d) testing an odor by directly inhaling the vapor
What is the most important safety rule?
a) never work with chemicals b) always use unbreakable glassware c) Always follow your teacher's instructions and textbook directions exactly d) never do expeirments that involve flames or hot objects
Which of the following conversion factors would you use to change 18 km to m?
a) They prove scientific theories b) They help visualize things that are very complex, very large, or very small c) They make it harder to understand things d) They never change
What is a physical or mental representation of an object or an event?
a) a theory b) a hypothesis c) a model d) a scientific law
What is a statement that summarizes a pattern found in nature?
a) a scientific law b) a fact c) a scientific theory d) a hypothesis
Which of the following statements is true about scientific theories?
a) scientific theories become scientific laws b) they are never proven c) they become hypotheses d) they summarize patterns found in nature.
What happens when the data in an investigation do not support the original hypothesis?
a) The scientist gives up and starts an investigation on a new topic b) The data must be incorrect and are thrown out c) The hypothesis is revised d) The data are altered so that they suppot the original hypothesis
What are the building blocks of all matter?
a) forces b) atoms c) magnetic fields d) kinetic and potential energy
In which step of the scientific method is information obtained through the senses?
a) drawing conclusions b) making observations c) analyzing data d) revising a hypothesis
Which of the following is NOT one of the main ideas of physical science?
a) The universe is very old and very large. b) Forces cause changes in motion c) Energy can be transferred from one form to another but never destroyed d) One of the main branches of natural science is biology.
How does Earth science overlap with life science?
a) It involves the study of Earth's rocks b) It involves the study of systems that include living organisms c) It involves the study of the composition of matter d) It does not overlap with life science
Which of the following is NOT a branch of natural science?
a) life science b) earth and space science c) physical science d) social science
How are science and technology related?
a) technology is a branch of natural science b) science is a branch of technology c) advances in science may lead to advances in technology and vice versa d) science and technology are not related
What is a system of knowledge and the methods used to find that knowledge?
a) science b) technology c) measurement d) curiosity
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