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Test your basic knowledge |
Praxis General Science
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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. The agent most widely and most consistently at work changing the appearance of the Earth's surface
3rd law of thermodynamics
Water
Chemical reactions
Kinetic Molecular theory
2. P1/T1=P2/T2. States that the pressure of a fixed amount of gas in a fixed volume is proportional to its temperature.
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3. The relationship between voltage - current - and resistance - V=IR
Stable electron arrangement
Refraction
OHMS law
Entropy
4. When measuring the volume of water in a graduated cylinder where does one read the measurement?
Alkaline earth metals are
Ampmeter
At the bottom of the meniscus curve
Group 1 on the periodic table are all
5. Transfer of thermal energy with in a fluid. The particles in a fluid transfer the thermal energy from hot areas to cooler areas EX. the warmed up rising air from a heat source such as a fire or electric heater.
Ampmeter
Transition elements
Convection
Ionic Bonds
6. A principle that states that for every action there is an equal reaction in the opposite direction
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7. Measure of the disorder or randomness of the particles that make of a system (measurement of movement of particles in a spontaneous reaction) EX. entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity.
Laws of thermodynamic / Laws of conservation
Entropy
Ionic Bonds
Conduction
8. (physics) a process that alters the energy or structure or composition of atomic nuclei - When a reaction involves the nucleus - elements become different thus is called a nuclear reaction.
Phases of matter
maximum number of electrons that an atom holds with one energy level
Specific gravity
Nuclear reaction
9. The buoyant force on an object is equal to the weight of the fluid displaced by the object
Load & switch
Push & Pull
Archimedes principle
Gay - Lussac's Law
10. Most directly involved with controlling levels of sugar in blood
Circut
Insulin
Work
Density
11. Substance that dissociates completely into its ions when added to water and conducts electricity well.
Types of Friction & Resistance
Isotopes
Strong electrolytes
Some Uses of electricity
12. Uses the transfer of heat from one substance to another to determine the specific heat of the substance.
Alkaline earth metals are
sulfhydryl group (Functional Group)
Constructive interference
Calorimeter
13. The more energy the electrons have
Doppler effect
birds
Single replacement reaction
The higher the voltage
14. Causes motion
Force
The presence of cells in the sample
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?
Nuclear energy
15. Shiny - softer & less dense. Mostly chemically active
Stable electron arrangement
Nuclear energy
Alkali metals are
Hecto
16. The amount of heat it takes to change a solid to a liquid
Group 2 on the periodic table
Carbonyl Group (Functional Group)
On the periodic table which elements are grouped by color
Latent heat
17. A compound of which a relatively small amount of the dissolved solute exists as ions in an aqueous solution. Example: Acetic acid - CH3COOH (vinegar)
Insulator
the mass number of an atom
Magnetic field
Weak Electrolytes
18. Electrons that can accept energy from outside sources and move farther away from the nucleus
Excited electrons
Fahrenheit
Power
Valence electrons
19. (physics) the capacity of a physical system to do work - or supply heat.
Electrophoresis
Alkaline earth metals are
Protons
Energy
20. An isotope has a different number of...
Deci
Semi - conductors
Inertia & circular motion
Neutrons
21. Concave
Heat is transferred in 3 ways
Eyeglasses are ____ so the image will hit the retina
Destructive interference
Heat Fusion
22. Excess energy is released into the environment
Current
As the train approaches and blasts its whistle - the whistle sounds..
Heat latent
Exothermic
23. Consists of frequency (f) - measured in hertz - and wavelength measured in meters - the frequency times the wavelength of every electromagnetic wave equals the speed of light.
Rubbing
The electromagnetic spectrum
alloy
Convection
24. Potential & Kinetic
Carbon Dioxide
Deca
What are the 2 most common encountered forms of energy are
Double replacement Reactions
25. 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.
Convection
Electrophoresis
Pasteur's postulate
Milli
26. Submarines - diving weighting system - naval architecture - Flotation - Buoyancy compensator
Nuclear energy
Hydroxyl group ( Functional group)
Applications of Archimedes principle
Some substances have no noticeable odor because these substances
27. 2 or more substances combine to form a compound EX. A+B -> AB
Spectrophotometry
Laws of thermodynamic / Laws of conservation
Composition reaction
Catalysts
28. Decibels
Physical properties of Meralliods
The intensity of sound is measured in
Series circut
Evaporation
29. The volume of a gas is directly proportional to the temperature of a gas
Pitch
Bernoulli principle
Charles law
Destructive interference
30. # of protons + # of neutrons
Mass number
Physical properties of Meralliods
sulfhydryl group (Functional Group)
oscilloscope
31. 1. nuclear reaction 2. radioactive
Radiation
During ____ elements change into other elements change into other elements called _____ elements.
Non - metal
When a light hits a rough surface
32. Alkali metals
Calorimeter
Group 1 on the periodic table are all
Hydrophobic
Semi - conductors
33. The device (bell or Build) is an example of a load. A load is a device that uses energy.
Load & switch
types of nuclear reactions?
types of particles in the nucleus?
Phases of matter
34. 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?
Centrifuge
Newtons 2nd law of motion
Exothermic
35. What are the # of protons in the nucleus of an atom called?
Inertia & circular motion
OHMS
Nuclear fission
Atomic number
36. A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling
Transverse Waves
Alkali metals are
Latent heat
Simple machines
37. Formed when one or more electrons are transferred from one atom to another. Transfer of electrons happens when metals & non - metals bond.
Heat
Chromatography
Ionic Bonds
Work
38. The interference that occurs when two waves combine to make a wave with a larger amplitude
Constructive interference
Direct Variations
Kilo - calorie
Metalloids
39. Mass of the substance contained per unit of volume
Density
Sonar technology
Law of momentum conservation
3rd law of thermodynamics
40. Record vibrations in earth & allow us to measure earthquake activity.
Nuclear energy
Neutrons
Ions are
Seismographs
41. Higher because it has higher apparent frequency.
Forces on objects at rest
As the train approaches and blasts its whistle - the whistle sounds..
Newtons 2nd law of motion
Doppler effect
42. A functional group consisting of a sulfur atom bonded to a hydrogen atom (
Bernoulli principle
Some Uses of electricity
sulfhydryl group (Functional Group)
Eyeglasses are ____ so the image will hit the retina
43. It scatters light in many directions
Compound machines
Inertia & circular motion
Pascal
When a light hits a rough surface
44. Temporary magnets that lose their magnetism when electric current is removed
Destructive interference
Electromagnets
Boron
Seismographs
45. A Compound breaks down into 2 or more simpler substances EX. AB -> A+B
Kilo
Decomposition reaction
Kinetic energy
Avogadros hypothesis
46. When force is applied to an object it moves in a straight line and adding force can make it go faster or slow down.
Straight line motion
Transition elements
Non - metal
Series circut
47. Solid has a definite shape and volume - Liquid has definite volume - but no shape - Gas has no shape of volume.
Chromatography
Group 2 on the periodic table
Phases of matter
oscilloscope
48. Are used in the treatment of cancer b/c they can kill cancer cells. However - if powerful enough they can kill healthy cells.
Chemical bond
Radioactive Particles
Convection
Stable electron arrangement
49. Is a simple device used to indicate the existence of a positive or negative charge.
Kinetic Friction
Hecto
Pascal
electroscope
50. Solutes that have bonds; no electrically charged species are created when they dissolve in water; glucose; lipids; urea
Condensation
Non - electrolytes
Rubbing
Magnetic domains
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