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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. Stored mechanical - Nuclear - Chemical - gravitational
Deca
Types of potential energy?
Isotopes
Grounding Charge
2. Heat transferred by fluid current
Convection
true of hurricanes but not of tornadoes
Charles law
electroscope
3. Liter is the base unit of...
potential energy
An electromagnet can be made more powerful in 3 ways
Chromatography
Volume
4. Clustered regions of aligned magnetic atoms. When these regions are aligned with one another - the substance containing them is a magnet.
Constructive interference
Thermal equilibrium
Magnetic domains
OHMS
5. '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
When light hits a smooth and shiny surface
Pitch
Valence electrons
6. The more energy the electrons have
Isotopes
The higher the voltage
The intensity of sound is measured in
Chemical reactions
7. They form only over warm oceans
true of hurricanes but not of tornadoes
Refraction
Atom
64.0 grams
8. Force of attraction that holds atoms together - when atoms are bonded chemically they give up their individual properties.
Mole
Black
Chemical bond
OHMS law
9. Way of keeping tract of valence electrons
Conduction
During ____ elements change into other elements change into other elements called _____ elements.
Calorie
Lewis dot structures
10. Change from gas to liquid
Neutrons
Condensation
circut types
Mass
11. Alkaline earth metals
Group 2 on the periodic table
Chromatography
Parallel Circut
Heat
12. Uses sound waves to locate objects and is especially useful underwater the sound waves bounce off the object and are used to assist in location
Longitudinal Waves
Gay - Lussac's Law
Current
Sonar technology
13. Change in the apparent frequency of a wave as observer and source move toward or away from each other
Boron
Doppler effect
Laws of thermodynamic / Laws of conservation
Static friction
14. Relates pressure & temp. and temp and volume.
Direct Variations
Centrifuge
Insulator
Atom
15. The molecular weight of a substance expressed in grams - measures the amount of a substance
Phases of matter
chemically active
Mole
Alkali metals are
16. Lacking affinity for water. Repels water. Non - polar
Protons
Hydrophobic
Simple machines
Atomic mass
17. A functional group consisting of a phosphorus atom covalently bonded to four oxygen atoms. Ideal for energy transfer reactions (ATP).
Deca
Phosphate group
The presence of cells in the sample
The intensity of sound is measured in
18. A nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy
Phosphate group
Fahrenheit
Nuclear Fusion
Exothermic
19. A nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
Nuclear fission
Nuclear reaction
Catalysts
Physical properties of Meralliods
20. # of electrons. Non - metals have 4-8 electrons in their outermost energy.
Gay - Lussac's Law
Venturi effect
Work
Difference between metals & non - metals
21. The monovalent group - OH in such compounds as bases and some acids and alcohols. Makes the molecule polar which increases the solubility of a compound.
Hydroxyl group ( Functional group)
Straight line motion
Convection
Grounding Charge
22. Elements in the middle of the periodic table - in groups 3-12.
Electromagnets
alloy
Transition elements
Valence electrons
23. Nuclear fission - Nuclear Fusion
Silicon
The higher the voltage
types of nuclear reactions?
Some substances have no noticeable odor because these substances
24. Symmetry - crystalline structures are universal - Crystallographic defects - Electrical properties - crystal system
During ____ elements change into other elements change into other elements called _____ elements.
Some characteristics of crystals
Refraction
Single replacement reaction
25. The interference that occurs when two waves combine to make a wave with a smaller amplitude
Destructive interference
Simple machines
Pasteur's postulate
Electricity charged objects share these characteristics (3)
26. A circut with two or more resistors where the electricity has more than one path to travel
Silicon
circut types
Parallel Circut
Covalent Bonds
27. Measure of the earth's pull
Energy
Kinetic Molecular theory
Weight
Kinetic energy
28. Electronic equipment that provides visual images of varying electrical quantities - Useful in studying waves b/c it gives a picture of the wave.
Evaporation
Double replacement Reactions
Forces on a moving object
oscilloscope
29. 1. nuclear reaction 2. radioactive
Density
Deca
During ____ elements change into other elements change into other elements called _____ elements.
When light hits a smooth surface
30. Mass & weight are not the ____ quality
Venturi effect
Hydrophobic
Valence electrons
same
31. Specific gravity is the ratio based on...
Density
Ionic Bonds
electrostatics
Kinetic Friction
32. (of a chemical reaction or compound) occurring or formed with absorption of heat. Absorbs energy from its surroundings.
Length
Endothermic
Newtons 2nd law of motion
Magnetic domains
33. 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)
Electrophoresis
Chemical reactions
Weight
Push & Pull
34. Heat transferred by direct contact
Catalysts
Conduction
Laws of thermodynamic / Laws of conservation
Chemical properties of metalliods
35. Animals in which of the following groups may have a backbone and a spinal cord?
Volume
Kelvin
Transverse Waves
Chordates
36. The region around a magnet where the magnetic force is exerted
Rubbing
Magnetic field
Gay - Lussac's Law
Charles law
37. Solids - gasses - and 1 liquid (Bromine)
Non - metals
Nucleus
At the bottom of the meniscus curve
same
38. 1000x the base unit
Decomposition reaction
Kilo
Conduction
Linear acceleration
39. The force of attraction between two objects. Gravity exists not only on earth - but also between planets as well as in black wholes
Pascal
On the periodic table which elements are grouped by color
Pull of gravity
Chemical reactions
40. Where are protons an neutrons located?
Heat conduction
Kilo - calorie
Inertia & circular motion
Inside the nucleus
41. 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.
Convection
Mass number
Calorimeter
Thermal equilibrium
42. Is the change from liquid to gas.
What are the 2 most common encountered forms of energy are
Newtons 2nd law of motion
Latent heat
Evaporation
43. Reflects the light in one direction
types of nuclear reactions?
types of particles in the nucleus?
When light hits a smooth surface
Hecto
44. Heat absorbed or radiated during a change of phase at a constant temperature and pressure - the amount of heat required to undergo a phase change
Eyeglasses are ____ so the image will hit the retina
Rubbing
the mass number of an atom
Latent heat
45. Formed when one or more electrons are transferred from one atom to another. Transfer of electrons happens when metals & non - metals bond.
Black
Ionic Bonds
Electricity charged objects share these characteristics (3)
Resistance
46. Is the path along which electrons flow
Linear acceleration
Strong electrolytes
Celsius
Circut
47. Carbon atom - atomic number 6 - atomic mass 11
types of particles in the nucleus?
Heat latent
isotopes of each other
same
48. Making and breaking of chemical bonds between atoms bonds involve only the outer electrons & do not effect the nucleus
Chemical reactions
Atomic number
Covalent Bonds
Laws of thermodynamic / Laws of conservation
49. Is done on an object when an applied force moves across a distance.
Work
Simple machines
Some substances have no noticeable odor because these substances
Kinetic energy
50. The amount of energy required to change a substance from the solid phase to the liquid phase at its melting point
Dynamics
Heat Fusion
Mole
conducted more easily