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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. The property of sound that varies with variation in the frequency of vibration.
Silicon
Nuclear Fusion
Destructive interference
Pitch
2. That for a fixed amount of gas at a constant temperature - the volume of a gas increases as its pressure decreases
When light hits a smooth surface
Boyles law states
Decomposition reaction
Nucleus
3. 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.
The electromagnetic spectrum
OHMS
Latent heat
birds
4. Objects are in thermal contact if they can affect each others temperature
Hydrophilic
When a light hits a rough surface
Thermal contact
Constructive interference
5. Resistance is measured in...
Insulator
Latent heat
Some Uses of electricity
OHMS
6. The amount of energy required for the liquid at its boiling point to become a gas
Mass number
birds
Heat vaporization
What are the 2 most common encountered forms of energy are
7. Measure of the earth's pull
Weight
Transverse Waves
Atomic number
Inside the nucleus
8. It scatters light in many directions
Nuclear fission
Transverse Waves
When a light hits a rough surface
At the bottom of the meniscus curve
9. Carbon atom - atomic number 6 - atomic mass 11
At the bottom of the meniscus curve
isotopes of each other
Current
Boyles law states
10. 1/10 the base unit
Deci
types of particles in the nucleus?
OHMS law
Length
11. It is the first element in group 13 - is a poor conductor of electricity at low temperature - however if temperature increases it will become a good conductor.
Thermal contact
Boron
circut types
newtons first law of motion
12. Heat transferred by direct contact
Seismographs
What are the 2 most common encountered forms of energy are
Entropy
Conduction
13. A boulder is sitting at the edge of the cliff it has which type of energy?
the mass number of an atom
First law of thermodynamics
oscilloscope
Potential energy
14. # of protons + # of neutrons
Calorimeter
Mass number
Potential difference
Seismographs
15. Discovered in the late 1800s that micro organisms play a casual role in onset of a disease
Hydrocarbons
Neutrons
Louis Pasteur
Destructive interference
16. 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.
Convection
Milli
Avogadros hypothesis
Charles law
17. Causes motion
Carbon Dioxide
Force
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?
Thermal contact
18. Atoms with an equal # of protons and electrons.
Doppler effect
64.0 grams
Phosphate group
Ions are
19. The theory that all matter is composed of particles (atoms and molecules) moving constantly in random directions
Electrochemistry
When light hits a smooth and shiny surface
Kinetic Molecular theory
Rubbing
20. Is an atom that has all of its electrons in the lowest possible energy levels
birds
Stable electron arrangement
The intensity of sound is measured in
At the bottom of the meniscus curve
21. 'An object at rest will remain at rest - and an object moving at a constant velocity will continue moving at a constant velocity - unless it is acted upon by an unbalanced force.' Another name is Law of Inertia
newtons first law of motion
As the train approaches and blasts its whistle - the whistle sounds..
Ionic Bonds
Seismographs
22. The acceleration of an object depends on the mass of the object and the amount of force applied.
Neutrons
Newtons 2nd law of motion
Calorie
Louis Pasteur
23. Alkali Metals are the most _____________
Black
Radiation
Sonar technology
chemically active
24. The device (bell or Build) is an example of a load. A load is a device that uses energy.
Chromatography
Series circut
Load & switch
Entropy
25. Higher because it has higher apparent frequency.
Halogens
As the train approaches and blasts its whistle - the whistle sounds..
During ____ elements change into other elements change into other elements called _____ elements.
Latent heat
26. Finding that a solution conducts an electric current shows conclusively that the solution...
Mass number
Contains ions
Potential energy
Excited electrons
27. Potential & Kinetic
What are the 2 most common encountered forms of energy are
Nuclear energy
Transition elements
Metalloids
28. The sum of the protons and neutrons
the mass number of an atom
Corona
Direct Variations
Types of Friction & Resistance
29. An object's _____ gives it resistance to change its current state of motion it is also the measure of an objects resistance to acceleration.
Ionic Bonds
Mass
Straight line motion
When a light hits a rough surface
30. You see your reflection
OHMS law
Pull of gravity
Contains ions
When light hits a smooth and shiny surface
31. The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Condensation
Heat Fusion
Electrophoresis
types of nuclear reactions?
32. The mechanical energy that a body has by virtue of its motion - energy of a moving object.
Types of Friction & Resistance
electrostatics
Newton's 3rd law motion
Kinetic energy
33. A unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure. used by nutritionists to characterize the energy - producing potential in food
Kilo - calorie
Electrophoresis
Spectrophotometry
Ions are
34. Electrical - Light (radiant) - Heat (thermal) - Movement
Types of kinetic energy?
Phosphate group
Chromatography
Density
35. A wave in which the particles move parallel to the path of the wave
Current
Longitudinal Waves
Two types of wave interference are (sound related)
Linear acceleration
36. (physics and chemistry) the smallest component of an element having the chemical properties of the element
Atomic number
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?
Atom
the mass number of an atom
37. It is second element in group 14 - semi - conductor. Sand is made of silicon - it is also used to manufacture glass and cement.
Mole
Chemical bond
Silicon
Conduction
38. The force of attraction between two objects. Gravity exists not only on earth - but also between planets as well as in black wholes
Endothermic
Exothermic
Weak Electrolytes
Pull of gravity
39. 1. Have some characteristics of metals & non - metals. 2. Properties do not follow patterns like metals & non - metals.
Conduction
The tilt of the Earth's axis of rotation relative to the ecliptic
Atom
Chemical properties of metalliods
40. Where are protons an neutrons located?
Direct Variations
Inside the nucleus
Heat conduction
Mole
41. They are neither precise nor accurate.
2nd law of thermodynamics
Chordates
Straight line motion
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?
42. Record vibrations in earth & allow us to measure earthquake activity.
Seismographs
Phases of matter
Length
Types of kinetic energy?
43. Polar molecules
Neutrons
Straight line motion
Hydrophilic
Work
44. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
Weight
Nuclear fission
Rubbing
newtons first law of motion
45. The center of the atom.
Nucleus
Chemical reactions
Water
isotopes of each other
46. When measuring the volume of water in a graduated cylinder where does one read the measurement?
At the bottom of the meniscus curve
Boyles law states
During ____ elements change into other elements change into other elements called _____ elements.
Bernoulli principle
47. The interference that occurs when two waves combine to make a wave with a smaller amplitude
Carbonyl Group (Functional Group)
Seismographs
Destructive interference
Gay - Lussac's Law
48. Energy is added to a system one of two things must happen either thermal energy must increase or work must be done.
Types of Friction & Resistance
A converging lens produces a real image when
Weight
Laws of thermodynamic / Laws of conservation
49. Force of attraction that holds atoms together - when atoms are bonded chemically they give up their individual properties.
Chemical bond
Carbon Dioxide
Sonar technology
Archimedes principle
50. The buoyant force on an object is equal to the weight of the fluid displaced by the object
Condensation
Archimedes principle
Direct Variations
Thermal equilibrium