Herold 8th Grade Sci Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What is matter? | anything that takes up space and has mass |
What is mass? | the amount of "stuff" in an object |
What is weight? | how mass is affected by gravity |
What is the Law of Conservation of Mass? | matter cannot be created or destroyed |
Why does gasoline float on top of water? | gasoline is less dense than water |
What is density? | the amount of matter in a specific spacethe ratio of mass to volume |
List the characteristics of a solid? | definite shape, definite volumeparticles are close together |
List the characteristics of a liquid | takes the shape of its container, definite volumeparticles are close together but can slide past each other |
List the characteristics of a gas | no definite shape, no definite volumeparticles are far apart |
What are two physical properties of water at 0 degrees C? | it is a solid and a liquid (water freezes and melts at this temperature) |
If you pour five different density liquid into a graduated cylinder, where would you find the liquid with the greatest density? | At the bottom |
What is energy? | The ability to do work |
What direction does a magnetic field flow? | From north to south |
Any disturbance that transmits energy through matter or space | Wave |
What is the name of the substance that a wave travels through? | Medium |
What is the lowest point between each crest called? | trough |
What is the highest point of a wave? | Crest |
A mechanical wave needs what to travel through? | Matter |
Can an electromechanical wave travel through space? | Yes |
What is the distance between any two identical points on a wave? | Wave length |
The number of events (or waves) in a given amount of time | Frequency |
Frequency is measured in this | Hertz is waves per second |
What component of a wave controls loudness | amplitude |
What component of a wave controls pitch | frequency |
When a wave bounces off a surface or an object | reflection |
What kind of reflection a mirror has | regular reflection |
In what direction does a transverse wave vibrate | perpendicular to the direction of the wave |
In what direction does a longitudinal wave vibrate | parallel to the direction of the wavehas parts called compressions and rarefactions |
What kind of reflection does a counter top have? | Diffuse reflection |
Any push or pull on an object | force |
A force that opposes all objects in motion | friction |
When net forces are not equal to zero | unbalanced force |
What kind of force causes a change in motion | unbalanced force |
When net forces are equal to zero | balanced force |
What kind of force will not cause a change in motion | balanced force |
Two things that speed depends on | time and distance |
What is velocity | time, distance, and direction |
How does air resistance affect a falling object? | slows it by applying force in the opposite direction |
Newton's First Law of Motion | an object in motion will stay in motion, an object at rest will stay at rest |
Newton's Second Law of Motion | acceleration depends on mass and amount of force applied F= m x a |
Newton's Third Law of Motion | For every action there is an equal but opposite reaction |
Resources that are used faster than they can be replaced by nature | Nonrenewable resources |
Resources that can be replaced as they are used | Renewable resources |
What is found in the nucleus of an atom? | Protons and neutrons |
What did Democritus, Dalton, Thomson, Rutherford, and Bohr all have in common? | contributed a part to current atomic theory |
Were are electrons likely to be found? | surrounding the outside of the nucleus in an electron cloud |
Smallest particle into which an element can be divided | atom |
In an atom, the part with the least mass | electrons |
Where metalloids are located on the periodic table | between metals and nonmetals |
What the components of a block on the periodic table | chemical symbol - the name of the elementatomic number - number of protonsatomic mass/weight - weight of an atom(found by adding protons and neutrons together) |
Definition of physical science | the study of matter and energy; the study of non-living things |
List the steps in the scientific method | observationrecognize the problemform a hypothesisanalyze the datadraw conclusionsshare results(Ralph Fell To Another Death Suddenly) |
What we use to gather observations | our senses |
Define observation | using the senses to describe the natural world |
Define inference | an explanation based on facts, but not direct observations. |
Key ingredient in an hypothesis | it must be testable |
Independent variable | the variable that is changed |
Dependent variable | the variable that is not being measuredthe result that depends on the independent variable |
Constant | the variables that are kept the same |
control | the standard for comparisonthe "normal" condition |
Tools to analyze data | Charts and graphs |
Scientific theory | A set of ideas that tie together many observations |
Scientific law | Descrrbes how some part of nature acts under certain conditions |
The section of a science fair project that answers whether or not the hypothesis was supported | conclusion |
Two factors necessary for a valid experiment | multiple trialscan be done (replicated) by others |
Two ways a hypothesis can be written | if...thenI predict... |
Arsenic (As) ... metal, nonmetal, or metalloid? | metalloid |
Created by:
mrsherold
Popular Science sets