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Test your basic knowledge |
CSET Physical Science 3
Start Test
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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. A measure of the acidity or basicity of a solution - The ____ scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement - these measurements are important for medicine - biology -
Refractive index
pH
The formation of rust
Gases
2. A gas - discharge lamp that uses electricity to excite mercury vapor - The excited mercury atoms produce short - wave ultraviolet light that then causes a phosphor to fluoresce - producing visible light
Mixture
Test experiment - Step 3
Heat conduction/Thermal conduction
Fluorescent lamp/fluorescent tube
3. Example of chemical change - Iron chemically reacts with air and water to form rust (ferrous oxide) and is unable to change back to iron
The formation of rust
Mohs' scale of hardness
Chemical elements
Electrons
4. The sum of the protons and neutrons gives an ______________ for the element
Matter
Higher boiling point
Hardness
average atomic mass
5. Composed of only one atom and cannot be separated into different substances except in some instances by radioactive decay or by nuclear reactions
Chemical elements
Weight
Celsius (
Inclined plane
6. Heat tends to move from a high - temperature region to a low- temperature region - This heat transfer may occur by the mechanisms of conduction - radiation - and convection
Light
positive
Steps in conducting a scientific investigation
Transfer of heat
7. A grooved wheel with a rope or other item wrapped around it - used to change the direction of an applied force - change the amount of force - transmit rotational motion - or realize a mechanical advantage in either a linear or a rotational system of
Mohs' scale of hardness
Wedge
Pulley/block
Velocity
8. The particular state of water is determined by ___________ - the behavior of water at one atmosphere (sea level) - freezing at 0
pressure and temperature
Temperature conversions
Nuclear fusion
Non - metals in the periodic table
9. Formed by the chemical combination of two or more elements in a fixed ratio Example: water
Lever
chemical symbol
Compounds
Higher boiling point
10. 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
Variables that are controlled
Incandescent light bulb
positive
Higher boiling point
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
Carbon dioxide and methane
Gravity
Physical properties
Energy
12. Temperature scale named after the German physicist Daniel Gabriel Fahrenheit (1686-1736) - who proposed it in 1724 - On this scale - the freezing point of water is 32
Pitch
Fahrenheit (
Pulley/block
Crest
13. Multiply force but do not change the direction of the input force End: Fulcrum Middle: Output force Other end: Input force Examples: wheelbarrows - baby strollers - bottle openers
positive
Sublimination
Second - class lever
Magnetism
14. Transferring of heat by the circulating motion of particles (in liquid or gas) - Occurs when hot air is less dense than cool air and therefore rises - When the heat moves in a circular pattern - convection currents are formed - Heat can be transferre
Celsius (
Gravity
Convection
Matter
15. The pitch of a sound depends on how fast the particles of a medium vibrate
Pitch
Reflection
groups or families
Inclined plane
16. Obtained by two different means - fission and fusion
Electrons
Nuclear energy
Pitch
Sublimination
17. A compressed gas pushes out __________ in all directions
Velocity
equally
Energy
Static electricity
18. Seems to travel in perfectly straight lines as rays - The direction of a ray changes at the interface between two transparent materials - like air and water
Light
pH indicator
Amplitude
Atomic number
19. Form a question (state the problem) - A scientific question is one that can be answered on the basis of evidence and that can be measured - The question often asks - 'What effect will something have
Water
Ratio of the length of its slope to its width
Solids
Steps in conducting a scientific investigation
20. 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
Acceleration
Inclined plane
Metals in the periodic table
Independent variable (manipulated variable)
21. The resulting piece of paper or solution with water becomes a ________ (one of the oldest) - used to test materials for acidity
pH indicator
Reflection
Pulley/block
number of protons
22. Collect Data (results) - Analyze the data to look for patterns or trends - Record measurements and observations during the experiment - Present data in a graph - table - or another form
Test experiment - Step 3
Non - metals in the periodic table
Mixture
Third - class lever
23. Energy generated from natural sources (such as sunlight - wind - rain - tides - and geothermal heat) which are renewable (naturally replenished)
Renewable energy
Steps in conducting a scientific investigation
Inclined plane
Solution
24. Refers to various properties of matter in the solid phase that give it a high resistance to its shape changing when force is applied
Hardness
Rebound hardness
Efficiently
chemical symbol
25. Can multiply force or distance depending on the location of the fulcrum End: Output force Middle: Fulcrum Other end: Input force Examples: seesaws - scissors - pliers
First - class lever
Static electricity
The six classical simple machines
Test experiment - Step 1 - Select the materials
26. Symbol: He Protons: 2 Neutrons: 2 Mass: 4
Mohs' scale of hardness
Wavelength
Crest
Helium
27. Resistance to plastic (permanent) deformation due to a constant load from a sharp object
Celsius (
Indentation hardness
Velocity
Ratio of the length of its slope to its width
28. The amount of matter in a chemical substance - In everyday usage - is commonly confused with weight
Wedge
Heat conduction/Thermal conduction
south pole
Mass
29. Height of the bounce of an object dropped o the material - related to elasticity
Thermal energy
Rebound hardness
Mixture
Dependent variable (responding variable)
30. The law of inertia - Without outside forces (such as gravity or friction) - an object at rest will remain at rest - while an object in motion will never stop or deviate from its course
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31. The portion of the light that crosses the boundary is - however - deflected in another direction - and the ______ does not equal the angle of incidence
Angle of refraction
groups or families
Newton's third law of motion
Litmus
32. Scratch hardness - indentation hardness - and rebound hardness
Develop a hypothesis
Three principal operational definitions of hardness
Gravitation
Nonrenewable energy
33. Made by combining two or more different materials without a chemical reaction occurring (the objects do not bond together) - They are the product of a mechanical blending or mixing of chemical substances - Either homogeneous or heterogeneous
Gravity
Mixture
Thermal radiation
Carbon dioxide and methane
34. In physics and engineering - it means the strength of the gravitational pull on the object (how heavy it is - measured in newtons)
chemical symbol
Acid rain
Weight
Optics
35. Electricity flows easily through materials that conduct electricity - Include metals such as aluminum (Al) - iron (Fe) - nickel (Ni) - silver (Ag) - and gold (Au)
Materials with high conductivity
Weight
Water
chemical symbol
36. A compound composed of one atom of sodium and one atom of chlorine (NaCl - sodium chloride)
Law of conservation of energy
Table salt
Compounds
Electric current
37. Results when electrical charges buildup or increase on the surface of a material - here - there is no current flowing as would be found in electrical outlets - When certain materials are rubbed together - electrons can move from one object to the oth
Newton's third law of motion
Static electricity
Acid rain
intermediate
38. 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
Motion
Indentation hardness
Draw conclusion
Acceleration
39. Symbol: C Protons: 6 Neutrons: 6 Mass: 12
Carbon
Chemical elements
Forms of energy
Compounds
40. When the electrons flow in one direction - the flowing electricity is referred to as current - An electric current is simply a flow of electrons through a wire
Current
Materials with poor conductivity
Nuclear fission
Screw
41. 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
Crest
Renewable energy
Solution
Solids
42. 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)
Rainbow
Fahrenheit (
Test experiment - Step 2 - Set up the procedure
positive
43. 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
Indentation hardness
Ballast
Refractive index
chemical symbol
44. 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
Lever
Materials with poor conductivity
The formation of rust
Metals in the periodic table
45. 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
Dependent variable (responding variable)
Three states of matter
Rebound hardness
Simple machine
46. 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
Density
Static electricity
Celsius (
Rainbow
47. Elements are assigned atomic numbers equal to the __________ in the nucleus of their atoms - Each element has a different number of protons
number of protons
Oxygen
Independent variable (manipulated variable)
presence
48. 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
Carbon dioxide and methane
Ratio of the length of its slope to its width
Physical changes
49. Temperature scale -0
Optics
Celsius (
The periodic table of the elements
Energy
50. Rates minerals and puts them on a scale from 1 to 10 (1 is the softest and 10 is the hardest) determined by the ability of a harder mineral to scratch a softer mineral - Talc is at 1 and diamond is at 10
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