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Test your basic knowledge |
CSET Physical Science 3
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Subjects
:
cset
,
science
Instructions:
Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. When foreign substances are dissolved in water it creates a solution - Solutions with a pH of less than 7.0 are said to be acidic - and solutions with a pH greater than 7.0 are said to be basic or alkaline
Efficiently
Heat conduction/Thermal conduction
Physical changes
Solution
2. Major greenhouse gases
Amplitude
Forms of energy
Carbon dioxide and methane
Chemical changes
3. The liquid state is __________ between the solid and gaseous states with regard to molecular motion and attractive forces between molecules Examples: water - oil - milk - honey
Refraction
Boyle's Law
intermediate
Wavelength
4. Unlike incandescent lamps - fluorescent lamps always require a ______ to regulate the flow of power through the lamp
Newton's third law of motion
Renewable energy
Lever
Ballast
5. Symbol: He Protons: 2 Neutrons: 2 Mass: 4
Develop a hypothesis
Static electricity
Helium
Frequency
6. Known as insulators - In materials that act as insulators - the electrons are held tightly inside their atoms and the electrons cannot move freely - Include plastic - rubber - glass - air - and wood
Electric circuit
Materials with poor conductivity
Compounds
Kinetic and potential energy
7. Explains why objects appear bent as light passes from one transparent object into another - Light travels at different speeds through different objects (faster through air than through water or glass) - Responsible for rainbows and for the splitting
Interval
Hydrogen
Refraction
Develop a hypothesis
8. A compound composed of one atom of sodium and one atom of chlorine (NaCl - sodium chloride)
Angle of incidence
Table salt
Materials with high conductivity
Incandescent light bulb
9. A constant change in the location of a body - Described by stating an object's position - velocity and acceleration
Motion
Ratio of the length of its slope to its width
Kinetic and potential energy
Law of conservation of energy
10. This is the one factor that will be intentionally changed during the experiment. Examples include changing the amount of salt that is added to water to determine its freezing point; introducing different soil types in germinating seeds; and changing
Independent variable (manipulated variable)
Ballast
Sublimination
Solids
11. The terms gravitation and gravity are mostly interchangeable in everyday use - refers specifically to the gravitational force exerted by the earth on objects in its vicinity
Gravity
Law of reflection
Hardness
Angle of refraction
12. The burning of coal also contributes to the formation of...
Convection
Nonrenewable energy
Liquids
Acid rain
13. A compound and portable inclined plane - A triangular - shaped tool used to separate two objects or portions of an object - lift an object - or hold an object in place - It functions by converting a force applied to its blunt end into forces perpendi
Amplitude
Hydrogen
Wedge
contrasted
14. A change of one substance into a different substance - Occurs whenever compounds are formed or decomposed - During this reaction - there is a rearrangement of atoms that makes or breaks chemical bonds - This change is usually not reversible - unlike
Chemical changes
proportional to its mass
Mechanical advantage
Three states of matter
15. A water - soluble mixture of different dyes extracted from lichens - It is often absorbed onto filter paper
Litmus
Distillation
Electromagnetic radiation
Refractive index
16. Kinetic energy: energy possessed by a moving object - An object in an unstable position has potential energy - for the position could be converted into movement Example: a baseball thrown vertically upward
Acceleration
Matter
Fluorescent lamp/fluorescent tube
Kinetic and potential energy
17. Made up of molecules with the composition H20 - One _____ molecule is built from two atoms of hydrogen and one atom of oxygen
Three principal operational definitions of hardness
Pitch
chemical symbol
Water
18. Scratch hardness - indentation hardness - and rebound hardness
Metals in the periodic table
Three principal operational definitions of hardness
Refractive index
Density
19. The earth's __________ orients the iron needles of navigational compasses
magnetic field
Deposition
Ballast
contrasted
20. The path or circuit an electric current flows - Electricity requires a complete path for the electrons to flow - If the path is broken and there are not alternative paths for the electrons to follow - the electrons will not move - make it possible fo
Electric circuit
Materials with poor conductivity
Charles's Law
Hardness
21. Involve one substance changing states (not one substance changing into another) - Typically reversible Example: water - Can change from a gas (water vapor) to a liquid (water) to a solid (ice) - but the water molecules do not change
pressure and temperature
groups or families
Rebound hardness
Physical changes
22. Formed by the chemical combination of two or more elements in a fixed ratio Example: water
Chemical elements
Nuclear fission
Scratch hardness
Compounds
23. As of 2006 - the table contains _____ chemical elements whose discoveries have been confirmed - 94 are naturally found on the earth - and the rest are synthetic elements that have been produced artificially in particle accelerators
117
Incandescent light bulb
The six classical simple machines
Thermal energy
24. For a homogeneous object - density is determined by dividing the mass by the volume (D = M/V) The mass is normally measured with an appropriate scale or balance - The volume may be measured directly (from the geometry of the object) or by the displac
pressure and temperature
Mass
Density
Heat conduction/Thermal conduction
25. Turns red under acidic conditions - and turns blue under basic (i.e. - alkaline) conditions
Sublimination
Litmus test
Acceleration
Electric circuit
26. Transferring of heat by emission and dissemination of waves or particles - Generated when heat from the movement of charged particles within atoms is converted to electromagnetic radiation - Electromagnetic radiation emitted from the surface of an ob
Thermal radiation
Weight
Angle of incidence
Density
27. A source of electric light that works by incandescence - An electric current passes through a thin filament - heating it until it produces light - The enclosing glass bulb prevents the oxygen in the air from reaching the hot filament - which otherwis
Table salt
Incandescent light bulb
Test experiment - Step 1 - Select the materials
groups or families
28. In each element's square - the ________ is in the middle - the atomic weight is usually directly below the symbol - the atomic number is usually shown at the top of the square
pressure and temperature
Atomic number
Acid rain
chemical symbol
29. Anything that has mass and occupies space - Everything you see and touch is composed of matter
Matter
Fluorescent lamp/fluorescent tube
number of protons
Reflection
30. If the pressure increases - the volume decreases; the reverse is true as well
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31. The ratio of the output to the input force - Also called leverage - Results in less force applied over a greater distance - Helps to make work easier
Hydrogen
Pitch
Three principal operational definitions of hardness
Mechanical advantage
32. State the specific plan on how to test the hypothesis - Create a written - step - by - step procedure - Determine the variables (any factor that can change in an experiment)
Oxygen
Rainbow
Chemical elements
Test experiment - Step 2 - Set up the procedure
33. A mechanical device that changes the direction or magnitude of a force - The simplest mechanisms that use mechanical advantage to multiply force - Uses a single applied force to do work against a single load force
Gases
Weight
Simple machine
average atomic mass
34. Symbol: Fe Protons: 26 Neutrons: 30 Mass 56
Refractive index
Iron
pH indicator
nucleus
35. A natural phenomenon by which objects with mass attract one another - Compels dispersed matter to coalesce - and thus it accounts for the very existence of the earth - the sun - and most of the macroscopic objects in the universe - Responsible for ke
Gravitation
freezing point
Steps in conducting a scientific investigation
Screw
36. The number of protons of that element - No two elements have the same atomic number - Elements in the periodic table are arranged in order of increasing atomic number
contrasted
Test experiment - Step 3
Atomic number
Wedge
37. Obtained by two different means - fission and fusion
Nuclear energy
Celsius (
Sublimination
equally
38. Solids - liquids - and gases
Draw conclusion
Three states of matter
Carbon
nucleus
39. Account for 17 elements in the periodic table - Lack the properties of metals but are very common - Include oxygen - nitrogen - and carbon - 7 metalloid elements - and 7 gases - Poor conductors of electricity
Indentation hardness
The six classical simple machines
Non - metals in the periodic table
Acid rain
40. For smooth surfaces - the angle at which light is incident on the surface equals the angle at which it is reflected
magnetic field
The six classical simple machines
Law of reflection
Frequency
41. An electric current also generates a magnetic field - demonstrating an intimate connection between electricity and magnetism - Recent work has united these phenomena - as well as light - into electromagnetic radiation
equally
Electromagnetic radiation
Draw conclusion
117
42. A conclusion is a summary and an explanation of the results of an experiment - Does the data support the hypothesis? If not - a new hypothesis can be formed
Newton's second law of motion
Solids
Static electricity
Draw conclusion
43. Protons have a __________ electrical charge - and neutrons have no charge
Mixture
Solution
Atomic number
positive
44. In everyday situations - the weight of an object is ____________ - which usually makes it acceptable to use the same word for both concepts
proportional to its mass
Celsius (
Nonrenewable energy
Hardness
45. Show the number of molecules or formula units of the reactants and products - Example: nitrous oxide is a colorless - odorless gas that causes mild hysteria when inhaled - hence the name laughing gas; it is prepared by heating ammonium nitrate crysta
Amplitude
Solids
Chemical reactions
Atomic number
46. The rate of change of velocity with time a = ?v/?t (acceleration = change of velocity/change of time)
Reflection
Temperature conversions
Draw conclusion
Acceleration
47. The amount of matter in a chemical substance - In everyday usage - is commonly confused with weight
ratio of the length of the sloped surface to the height
Physical properties
Mass
Ballast
48. Also generates a magnetic field - demonstrating an intimate connection between electricity and magnetism
Metals in the periodic table
average atomic mass
Electric current
Violet
49. The top of a wave's 'hill'
Gravity
Crest
117
Test experiment - Step 3
50. Resistance to fracture or plastic (permanent) deformation due to friction from a sharp object
Simple machine
Electricity
Scratch hardness
Steps in conducting a scientific investigation
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