SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
Search
Test your basic knowledge |
Praxis General Science
Start Test
Study First
Subjects
:
praxis
,
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. Potential & Kinetic
What are the 2 most common encountered forms of energy are
Ampmeter
Atomic mass
Push & Pull
2. Removal of static electricity by conduction
the mass number of an atom
Boyles law states
Phosphate group
Grounding Charge
3. Alkaline earth metals
When light hits a smooth surface
Exothermic
Group 2 on the periodic table
Condensation
4. A compound of which a relatively small amount of the dissolved solute exists as ions in an aqueous solution. Example: Acetic acid - CH3COOH (vinegar)
Weak Electrolytes
Composition reaction
Current
Chemical properties of metalliods
5. An electric circut with a single path
Newton's 3rd law motion
Series circut
Sonar technology
Alkaline earth metals are
6. All processes cease when temperature approaches 0.
Direct Variations
3rd law of thermodynamics
Longitudinal Waves
Eyeglasses are ____ so the image will hit the retina
7. 1.) Protons 2.) Neutrons - They both have the same mass - but neutrons have no mass.
Physical properties of Meralliods
Constructive interference
types of particles in the nucleus?
Forces on objects at rest
8. Harder - denser - have higher melting points & are chemically active.
Nuclear energy
The intensity of sound is measured in
Alkaline earth metals are
Potential difference
9. Experiments may not be done on...
Laws of thermodynamic / Laws of conservation
Power
Two types of wave interference are (sound related)
birds
10. Alkali Metals are the most _____________
chemically active
Nucleus
Strong electrolytes
Work
11. Causes motion
Compound machines
When light hits a smooth and shiny surface
Destructive interference
Force
12. Finding that a solution conducts an electric current shows conclusively that the solution...
Contains ions
the mass number of an atom
Rubbing
Thermal contact
13. The transfer of heat by electromagnetic waves is called?
Insulin
Nuclear Fusion
Chromatography
Radiation
14. A piece of paper that appears blue in sunlight is illuminated solely by a red light that is passed through a green filter. What color does the paper appear under this illumination?
Weight
Rubbing
Chemical properties of metalliods
Black
15. The state of two or more objects or substances in thermal contact when they have reached a common temperature - EX. the affects after a hot cup of coffee meeting the desk temperature.
Buret
Refraction
Thermal equilibrium
Two types of wave interference are (sound related)
16. Substance that dissociates completely into its ions when added to water and conducts electricity well.
Strong electrolytes
The electromagnetic spectrum
Milli
Semi - conductors
17. A principle that states that for every action there is an equal reaction in the opposite direction
18. The object is further than one focal length from the lens
A converging lens produces a real image when
Electromagnets
Buret
Potential difference
19. The process of heat transfer via solid contact
Types of kinetic energy?
Crystals is a regular repeating Arrangement of atoms - ions - or molecules. They are well Organized structures. The 2 kinds of structures are:
Halogens
Heat conduction
20. Specific gravity is the ratio based on...
Density
Physical properties of Meralliods
During ____ elements change into other elements change into other elements called _____ elements.
Atomic number
21. The centripetal force is provided by the high banking of the curved road & by friction between the wheels & the road.
Difference between metals & non - metals
isotopes of each other
Inertia & circular motion
Circut
22. 1. Make more coils - 2. put an iron cover (nail) inside the coils - use more battery power
Rubbing
An electromagnet can be made more powerful in 3 ways
Linear acceleration
Radiation
23. (physics) the capacity of a physical system to do work - or supply heat.
Hecto
Chordates
Energy
Isotopes
24. Stored mechanical - Nuclear - Chemical - gravitational
Insulator
Types of potential energy?
Some characteristics of crystals
A converging lens produces a real image when
25. Reflects the light in one direction
Chemical bond
Excited electrons
Density
When light hits a smooth surface
26. They are neither precise nor accurate.
The true length of a block of wood is 1.010 cm. Three measurements of this block produced the following values: 1.4 cm - 1.2 cm - and 0.9 cm. Which of the following statements is true concerning these measurements?
Work
Destructive interference
Longitudinal Waves
27. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Calorie
Potential difference
Doppler effect
Resistance
28. 1. All are solids having the appearance of metals & non - metals. 2. All are white or gray - but not shiny 3. Conduct electricity - but not as well as metals.
Physical properties of Meralliods
Ions are
Potential energy
Transition elements
29. 2 or more substances combine to form a compound EX. A+B -> AB
Work
Composition reaction
Static friction
Potential difference
30. The region around a magnet where the magnetic force is exerted
Load & switch
conducted more easily
Lewis dot structures
Magnetic field
31. Are used in the treatment of cancer b/c they can kill cancer cells. However - if powerful enough they can kill healthy cells.
Radioactive Particles
alloy
Radiation
Kinetic Molecular theory
32. # of electrons. Non - metals have 4-8 electrons in their outermost energy.
Deca
Nuclear energy
Load & switch
Difference between metals & non - metals
33. The number of electrons per second that flow past a point in a circut.
Covalent Bonds
chemically active
Current
Refraction
34. Reduction in pressure of a fluid resulting from the speed increase as fluids are forced to flow faster through narrow spaces
Fahrenheit
Isotopes
Venturi effect
types of nuclear reactions?
35. Small uncharged particles in the nucleus they are neutral
Electrophoresis
Neutrons
Transverse Waves
Strong electrolytes
36. Is done on an object when an applied force moves across a distance.
Applications of Archimedes principle
Thermal equilibrium
When a light hits a rough surface
Work
37. Symmetry - crystalline structures are universal - Crystallographic defects - Electrical properties - crystal system
Boron
Rubbing
Some characteristics of crystals
oscilloscope
38. A buret is used to deliver solution in precisely - measured - variable volumes. deliver one reactant until the precise end point of the reaction is reached.
Series circut
Convection
Mass
Buret
39. Metric unit for measuring temperature; On this scale water freezes at zero and boils at 100.
Excited electrons
Celsius
potential energy
Semi - conductors
40. The relationship between voltage - current - and resistance - V=IR
OHMS law
Deci
Chemical reactions
Latent heat
41. The difference in electrical charge between two points in a circuit expressed in volt. When an electron goes through a load it does work & loses some energy.
Potential difference
Thermal equilibrium
Inside the nucleus
64.0 grams
42. Uses electrical charges of molecules to separate them according to their size the molecules such as DNA or proteins - are pulled through a gel towards either the positive end of the gel box.
The higher the voltage
Transition elements
Electrophoresis
At the bottom of the meniscus curve
43. Relates pressure & temp. and temp and volume.
Direct Variations
same
Double replacement Reactions
alloy
44. A circut with two or more resistors where the electricity has more than one path to travel
Parallel Circut
Phases of matter
electroscope
Atomic number
45. Pushing a vacuum cleaner or pulling a bowstring applies muscular force when the muscles expand & contract elastic force occurs when an object returns to its original shape (for example - when a bow is released)
Nuclear fission
Electricity charged objects share these characteristics (3)
Hydrophilic
Push & Pull
46. Animals in which of the following groups may have a backbone and a spinal cord?
Electrochemistry
Chordates
Deca
alloy
47. Electrical - Light (radiant) - Heat (thermal) - Movement
Types of kinetic energy?
The higher the voltage
Celsius
Crystals is a regular repeating Arrangement of atoms - ions - or molecules. They are well Organized structures. The 2 kinds of structures are:
48. Mass of the substance contained per unit of volume
Density
Heat is transferred in 3 ways
An electromagnet can be made more powerful in 3 ways
Compound machines
49. (physics and chemistry) the smallest component of an element having the chemical properties of the element
Alkaline earth metals are
Mole
Heat is transferred in 3 ways
Atom
50. Two or more simple machines working together EX. wheelbarrow it uses level - wheel & axle.
Pascal
Latent heat
Venturi effect
Compound machines