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Test your basic knowledge |
CSET Physical Science 3
Start Test
Study First
Subjects
:
cset
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. 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
Third - class lever
Mixture
Deposition
Temperature conversions
2. Characterized by their ability to retain their shape - Relatively incompressible - Melt when heated and vaporize only slightly - All substances become solid if cooled sufficiently Examples: rocks - crystals - wood - feather - ice
Solids
Density
Celsius (
Independent variable (manipulated variable)
3. 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
Incandescent light bulb
Light
Test experiment - Step 3
Refraction
4. A hypothesis is an attempt to answer the question or predict the outcome - - A hypothesis is a possible explanation for a set of observations
contrasted
Thermal radiation
Develop a hypothesis
freezing point
5. 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
Electricity
Fluorescent lamp/fluorescent tube
Light
Weight
6. 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
Hydrogen
freezing point
Transfer of heat
Fahrenheit (
7. Refers to various properties of matter in the solid phase that give it a high resistance to its shape changing when force is applied
Test experiment - Step 1 - Select the materials
Draw conclusion
Refractive index
Hardness
8. In everyday situations - the weight of an object is ____________ - which usually makes it acceptable to use the same word for both concepts
Wedge
Chemical reactions
The formation of rust
proportional to its mass
9. Are inclined planes - Can convert a rotational force (torque) to a linear force - and vice versa - The ratio of threading determines the mechanical advantage of the machine - More threading increases the mechanical advantage
Weight
Screw
Renewable energy
Matter
10. Unlike incandescent lamps - fluorescent lamps always require a ______ to regulate the flow of power through the lamp
contrasted
Ballast
Density
Gravitation
11. In optics - refraction occurs when light waves travel from a medium with a given refractive index to a medium with another index Example: A ray of light will refract as it enters and leaves glass - assuming there is a change in the refractive index.
south pole
Test experiment - Step 2 - Set up the procedure
Optics
Dependent variable (responding variable)
12. The characteristics that makes up the physical composition of a substance - Include color - form - electrical conductivity - and density
Law of conservation of energy
Kinetic and potential energy
Physical properties
Test experiment - Step 3
13. Occurs when light travels only in straight lines - An object is visible because light is reflected from the object into our eyes
Non - metals in the periodic table
Liquids
Reflection
contrasted
14. As temperature increases (at a fixed pressure) - so does volume Examples: air - helium - steam
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15. 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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16. 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
Inclined plane
Independent variable (manipulated variable)
Lever
Second - class lever
17. Atoms are made up of several tiny parts - At the center of an atom is a core called the __________ - which is made up of particles called protons and neutrons
Measurement
nucleus
Renewable energy
equally
18. The pitch of a sound depends on how fast the particles of a medium vibrate
Forms of energy
south pole
Variables that are controlled
Pitch
19. Resistance to plastic (permanent) deformation due to a constant load from a sharp object
Second - class lever
Indentation hardness
Variables that are controlled
Wheel and axle
20. Also generates a magnetic field - demonstrating an intimate connection between electricity and magnetism
Frequency
Law of reflection
Electric current
Energy
21. These are the factors that are kept exactly the same in an experiment. In an experiment on plant growth - the variables could include amount of sunlight - type of soil - amount of water - and type of plant. Only one factor at a time is changed - whil
Nuclear fission
Acceleration
Variables that are controlled
Thermal energy
22. Symbol: He Protons: 2 Neutrons: 2 Mass: 4
Electricity
Physical sciences
Helium
Refractive index
23. 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
Table salt
Pulley/block
Mechanical advantage
Boyle's Law
24. Turns red under acidic conditions - and turns blue under basic (i.e. - alkaline) conditions
Fluorescent lamp/fluorescent tube
Measurement
Steps in conducting a scientific investigation
Litmus test
25. The mechanical advantage of a wedge is given by the ______________________ - Although a short wedge with a wide angle may do a job faster - it requires more force than a long wedge with a narrow angle
Newton's first law of motion
magnetic field
Ratio of the length of its slope to its width
The formation of rust
26. Example of chemical change - Iron chemically reacts with air and water to form rust (ferrous oxide) and is unable to change back to iron
Optics
The formation of rust
Scratch hardness
Independent variable (manipulated variable)
27. For smooth surfaces - the angle at which light is incident on the surface equals the angle at which it is reflected
Test experiment - Step 2 - Set up the procedure
Motion
Law of reflection
Variables that are controlled
28. 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
Simple machine
intermediate
Measurement
Carbon dioxide and methane
29. The branches of natural sciences that study the nature and properties of energy and non - living matter
The periodic table of the elements
Law of reflection
Physical sciences
Carbon dioxide and methane
30. Height of the bounce of an object dropped o the material - related to elasticity
intermediate
Rebound hardness
Test experiment - Step 1 - Select the materials
Energy
31. Expand to fill any available space - a compressible fluid - with its volume determined by the pressure and temperature of the environment
Crest
Oxygen
Gases
nucleus
32. 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
Charles's Law
Wavelength
Non - metals in the periodic table
33. In physics and engineering - it means the strength of the gravitational pull on the object (how heavy it is - measured in newtons)
Mass
Reflection
Newton's first law of motion
Weight
34. However - a fluorescent lamp converts electrical power into useful light more __________ than an incandescent lamp; lower energy costs offset the higher initial cost of the lamp
Magnetism
Efficiently
Draw conclusion
Electromagnetic radiation
35. A wave's height - the distance between its resting position and its crest
First - class lever
magnetic field
ratio of the length of the sloped surface to the height
Amplitude
36. Take on the shape of their containers - yet cannot be compressed to any significant extent - The volume is constant unless evaporation is occurring
Physical properties
Compounds
nucleus
Liquids
37. This is the variable that changes as a result of the manipulated variable. The dependent variable is observed and measured. Examples include determining how long various saltwater solutions take to freeze - and determining the number of cycles a pend
equally
Matter
Dependent variable (responding variable)
Newton's first law of motion
38. 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
Angle of refraction
Light
Renewable energy
Materials with high conductivity
39. A temperature interval of one degree F is an interval of 5/9 of a degree C - The Fahrenheit and Celsius scales coincide at -40
Temperature conversions
Electromagnetic radiation
Optics
Steps in conducting a scientific investigation
40. Solids - liquids - and gases
positive
ratio of the length of the sloped surface to the height
Convection
Three states of matter
41. The rate of change of position with time v = ?d/?t (velocity = change of distance/change of time)
Velocity
ratio of the length of the sloped surface to the height
Newton's first law of motion
Newton's third law of motion
42. Metals account for the vast majority of the elements in the periodic table - Show a wide range of chemical and physical properties - Most metals are good conductors of heat and electricity - and some - like iron and cobalt - are magnetic - Many metal
Dependent variable (responding variable)
Metals in the periodic table
Develop a hypothesis
Lever
43. 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 -
pH
Draw conclusion
freezing point
Heat conduction/Thermal conduction
44. The resulting piece of paper or solution with water becomes a ________ (one of the oldest) - used to test materials for acidity
Law of conservation of energy
pH indicator
Ratio of the length of its slope to its width
Carbon
45. Hard matter is ______ with soft matter
Light
contrasted
Gases
Incandescent light bulb
46. 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
Variables that are controlled
Chemical reactions
The periodic table of the elements
number of protons
47. The amount of matter in a chemical substance - In everyday usage - is commonly confused with weight
Electrons
Optics
Physical changes
Mass
48. Relies on the the first law - The acceleration of an object is proportional to the force applied (the more force - the more acceleration)
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49. The beginning of scientific wisdom - The physicist's first reaction to a new idea is to ask: Can it be measured? Can I describe it with numbers?
Reflection
Measurement
Wavelength
Refraction
50. Designed to separate substances in a liquid through vaporization - Usually carried out in an apparatus called a still - which requires a boiler - a condenser - and a receiver Example: Purify ocean water
Mass
Celsius (
Distillation
Liquids