Physics chapter 1 test
Determine the number of sig figs in the following numbers. 0.0004 g a. 1 b. 2 c. 3 d. 4 e. none of these
a. 1
Determine the number of sig figs in the following numbers. 800000000 a. 1 b. 2 c. 3 d. 4 e. none of these
a. 1
The most appropriate estimate for the length of a human leg is... a. 1.0 m b. 0.10 m c. 0.01 m d. 0.001 m e. none of these
a. 1.0 m
A collection of quantitative and qualitative observations from one or more senses is... a. data b. a model c. a hypothesis d. a conclusion e. none of these
a. data
The three measurements most commonly used in physics as Standard units are a. length, mass, time b. length, weight, time c. length, time, speed d. mass, weight, time e. none of these
a. length, mass, time
If the distance traveled is related to time squared (s²) in the equation d=Zt, the constant Z has which dimensions? a. m/sec² b. m c. s d. m² e. none of these
a. m/sec²
In the scientific method, physicists formulate and objectively test hypothesis by... a. performing experiments b. asking questions c. making observations d. defining systems e. none of these
a. performing experiments
Studying the atom, specifically the electron, involves which area of physics? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
a. quantum mechanics
A(n) _____ is a specific portion of an event in a given region of space that has been selected for study during an experiment or observation a. system b. variable c. controlled experiment d. observation e. none of these
a. system
A pastry chef uses different temperatures to grow sensitive yeasts and bake special breads. Which area of physics is involved? a. thermodynamics b. relativity c. mechanics d. electromagnetism e. none of these
a. thermodynamics
Determine the number of sig figs in the following numbers. 2.5 x 10 ^6 milisec a. 1 b. 2 c. 3 d. 4 e. none of these
b. 2
Calculations of SI base units form... a. base units b. derived units c. significant figures d. labels e. none of these
b. derived units
The kind of physical quantity represented by a certain measurement is called a... a. unit b. dimension e. none of these
b. dimension
The purpose of the scientific method is to... a. use math b. investigate the universe c. observe known theories d. gather thoughts e. none of these
b. investigate the universe
Researching with telescopes involves which area of physics? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
b. optics
The hadron collider scientists study the manner in which particles move at any speed, especially very high speed. Which area if physics is involved? a. thermodynamics b. relativity c. mechanics d. electromagnetism e. none of these
b. relativity
A(n) ______ is a condition that changes during experimentation a. system b. variable c. controlled experiment d. observation e. none of these
b. variable
The most appropriate estimate for the length of a fingernail is a. 1.0 m b. 0.10 m c. 0.01 m d. 0.001 m e. none of these
c. 0.01 m
Determine the number of sig figs in the following numbers. 30800000 sec a. 1 b. 2 c. 3 d. 4 e. none of these
c. 3
A(n) _______ is designed to limit variables during experimentation... a. system b. variable c. controlled experiment d. observation e. none of these
c. controlled experiment
If the change of distance Δx is related to velocity, v, (with units of m/s) in the equation Δx = Av, the constant A has which dimensions? a. m/sec² b. m c. s d. m² e. none of these
c. s
Limiting sailboat instability and rattling in races often involves which area of physics? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
c. vibrations and wave phenomena
Determine the number of sig figs in the following numbers. 0.0005406 a. 1 b. 2 c. 3 d. 4 e. none of these
d. 4
Models are used to... a. simplify the system b. organize the relevant components c. idealize the system d. all of these e. none of these
d. all of these
The metric system or the SI system is a. Le System International d'Unites b. a system that uses prefixes to differentiate between sizes of units c. defined in terms of standards of measurements d. all of the above e. none of these
d. all of these
A hiker uses a compass to navigate through the woods. Identify the area of physics that this involves. a. thermodynamics b. relativity c. mechanics d. electromagnetism e. none of these
d. electromagnetism
Recharging your iPad involves which area of physics? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
d. electromagnetism
Using magnets to generate electricity involves which area of physics? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
d. electromagnetism
A(n) ______ is the use of any or all of your senses to obtain information about an event. a. system b. variable c. controlled experiment d. observation e. none of these
d. observation
The steps of the scientific method are best ordered as... a. testing - hypothesis - experimenting and data gathering - interpreting results - concluding b. hypothesis - experimenting and data gathering - theorizing - observing - concluding c. observing - hypothesis - concluding d. observing - hypothesis - experimenting and data gathering - interpreting results - concluding
d. observing - hypothesis - experimenting and data gathering - interpreting results - concluding
Which of the following has labels of m/s²? a. (m X s)² b. square root of (m X m X m)/s c. m/m² d. square root of (m²/s^4) e. none of these
d. square root of (m²/s^4)
Determine the number of sig figs in the following numbers. 0.0074590 m a. 1 b. 2 c. 3 d. 4 e. none of these
e. none of these
The most appropriate estimate for the length of a cross country race is... a. 1.0 m b. 0.10 m c. 0.01 m d. 0.001 m e. none of these
e. none of these
Which area of physics includes the study of motion and its causes? a. quantum mechanics b. optics c. vibrations and wave phenomena d. electromagnetism e. none of these
e. none of these