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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. A functional group consisting of a sulfur atom bonded to a hydrogen atom (
Direct Variations
circut types
Destructive interference
sulfhydryl group (Functional Group)
2. Atoms of the same element that have different numbers of neutrons
Strong electrolytes
Alkali metals are
Isotopes
Parallel Circut
3. 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?
Black
Protons
Kelvin
Atomic mass
4. 1000x the base unit
Kilo
Celsius
When light hits a smooth and shiny surface
Buret
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.
64.0 grams
Conduction
Specific gravity
Convection
6. ______ of an atom is equal to the # of protons plus the # of protons plus the # of neutrons
Atomic mass
Power
Some substances have no noticeable odor because these substances
An electromagnet can be made more powerful in 3 ways
7. All processes cease when temperature approaches 0.
Energy
When light hits a smooth and shiny surface
3rd law of thermodynamics
Isotopes
8. The mechanical energy that a body has by virtue of its motion - energy of a moving object.
The tilt of the Earth's axis of rotation relative to the ecliptic
OHMS
Kinetic energy
Phases of matter
9. Inclined plane - lever - wheel & axle - pulley.
Deca
Simple machines
sulfhydryl group (Functional Group)
Pascal
10. (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.
Nuclear reaction
Electromagnets
When a light hits a rough surface
chemically active
11. Resistance is measured in...
Chemical properties of metalliods
sulfhydryl group (Functional Group)
Magnetic field
OHMS
12. 8 electrons
maximum number of electrons that an atom holds with one energy level
Charles law
Strong electrolytes
Isotopes
13. An object's _____ gives it resistance to change its current state of motion it is also the measure of an objects resistance to acceleration.
An electromagnet can be made more powerful in 3 ways
Bernoulli principle
Mass
Push & Pull
14. The ability of the material to oppose the flow of electrons through it all
Resistance
Magnetic domains
Nuclear fission
Isotopes
15. The relationship between voltage - current - and resistance - V=IR
Isotopes
Excited electrons
Avogadros hypothesis
OHMS law
16. The branch of physics that deals with static electricity - study of stationary electric charges.
conducted more easily
Pasteur's postulate
chemically active
electrostatics
17. A gelatinous sample of material from a previously unexplored marine environment is thought to be living or to be composed of recently living material. Which of the following would most clearly confirm that the material has a biological origin?
During ____ elements change into other elements change into other elements called _____ elements.
The presence of cells in the sample
Forces on objects at rest
types of nuclear reactions?
18. Clustered regions of aligned magnetic atoms. When these regions are aligned with one another - the substance containing them is a magnet.
Work
Magnetic domains
Electrophoresis
Charles law
19. Alkaline earth metals
Group 1 on the periodic table are all
Parallel Circut
Heat
Group 2 on the periodic table
20. Measures the amount of matter in an object
As the train approaches and blasts its whistle - the whistle sounds..
Mass
Simple machines
A converging lens produces a real image when
21. The amount of energy that it takes to raise one gram of water one degree celsius.
Calorie
Two types of wave interference are (sound related)
the mass number of an atom
Pull of gravity
22. According to some scientists - the Earth's average surface temperature is rising as a result of the greenhouse effect. An increase in the atmospheric concentration of which of the following gases is considered to be primarily responsible
Compound machines
Carbon Dioxide
chemically active
Mole
23. Potential & Kinetic
Transverse Waves
Deci
Bernoulli principle
What are the 2 most common encountered forms of energy are
24. Nuclear fission - Nuclear Fusion
Force
types of nuclear reactions?
Metalloids
Types of potential energy?
25. A heat that required to change (water from liquid to solid) from one state to another.
Heat latent
On the periodic table which elements are grouped by color
Constructive interference
Chemical reactions
26. Stored mechanical - Nuclear - Chemical - gravitational
Types of potential energy?
Entropy
Endothermic
Double replacement Reactions
27. 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.
Isotopes
Calorimeter
OHMS
Physical properties of Meralliods
28. Used in electrical devices that have to function at temperatures too high for metals.
Transition elements
First law of thermodynamics
Semi - conductors
types of nuclear reactions?
29. Higher because it has higher apparent frequency.
Hydrocarbons
Kelvin
As the train approaches and blasts its whistle - the whistle sounds..
types of nuclear reactions?
30. 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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183
31. Is the study of the relationship between motion & the forces affecting motion.
Noble gasses
the mass number of an atom
Dynamics
Bernoulli principle
32. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
Electrochemistry
Valence electrons
Nuclear fission
Hydrophobic
33. As the velocity of a fluid increases - the pressure exerted by the fluid decreases - The speed of a fluid - liquid - gas - increases the pressure exerts.
Bernoulli principle
Laws of thermodynamic / Laws of conservation
Ions are
Direct Variations
34. Change the chemical composition of a material - Computers can be made small enough to fit inside a plastic credit card - resistors are used to regulate volume on television or radio -
Thermal equilibrium
Mole
Some Uses of electricity
birds
35. The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Heat Fusion
Calorie
Nuclear reaction
Pull of gravity
36. The force of attraction between two objects. Gravity exists not only on earth - but also between planets as well as in black wholes
As the train approaches and blasts its whistle - the whistle sounds..
Non - metal
Pull of gravity
same
37. Experiments may not be done on...
Heat is transferred in 3 ways
oscilloscope
maximum number of electrons that an atom holds with one energy level
birds
38. Is formed when 2 atoms share electrons - covalent bonding happens among non - metals.
Louis Pasteur
Covalent Bonds
Electromagnets
Archimedes principle
39. Solutes that have bonds; no electrically charged species are created when they dissolve in water; glucose; lipids; urea
Group 2 on the periodic table
Conduction
Non - electrolytes
Avogadros hypothesis
40. When force is applied to an object it moves in a straight line and adding force can make it go faster or slow down.
Resistance
Calorimeter
Heat Fusion
Straight line motion
41. Negatively charged particles found outside the nucleus
Electrons
As the train approaches and blasts its whistle - the whistle sounds..
Mass
Evaporation
42. Liter is the base unit of...
Charles law
Volume
Seismographs
potential energy
43. The formula F=M/A is a shorthand force equals mass over acceleration. An object will not move unless the force is strong enough to move the mass.
Two types of wave interference are (sound related)
Forces on objects at rest
Mole
circut types
44. The volume of a gas is directly proportional to the temperature of a gas
Exothermic
The electromagnetic spectrum
Alkaline earth metals are
Charles law
45. A free element replaces an element that is a part of a compound. Ex. A +BX -> AX + B
Longitudinal Waves
Single replacement reaction
Linear acceleration
conducted more easily
46. Friction opposes the motion of one surface past another - Friction is common when slowing down a car or sledding down a hill.
Deci
Rubbing
Fahrenheit
Sonar technology
47. Is the change from liquid to gas.
Law of momentum conservation
Heat latent
Longitudinal Waves
Evaporation
48. Is the transfer of energy by waves such as the electromagnetic waves emitted by stars the sun warms the earth by emitting radiant energy.
Black
Radiation
Refraction
Heat is transferred in 3 ways
49. Several vehicles - initially at a complete stop - begin a long race at the same starting point. The vehicle that has a constant value for which of the following is most likely to win?
Heat is transferred in 3 ways
Linear acceleration
An electromagnet can be made more powerful in 3 ways
Thermal equilibrium
50. Series circut - Parallel circut
circut types
Boron
Convection
Load & switch