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WorksheetsQuiz
Total questions: 15
Worksheet time: 8mins
Which of the following statements best describes a hypothetical element with an electron configuration of 1s22s22p63s23p5?
The hypothetical element has an atomic number of 11
The hypothetical element is a member of Group V, otherwise called the Nitrogen Group
The hypothetical element is in the fifth position in the p-block, along the third period of the periodic table
The hypothetical element is located at the third position of the p-block, along the fifth period of the periodic table.
Despite the observed diversity among organisms, they are all made from the same set of biomolecules composed of monomeric units except:
Proteins
Carbohydrates
Nucleic Acids
Lipids and Fats
What will be formed when radium isotope, with 88 protons and 138 neutrons undergoes alpha decay?
Radon Atom (Rn222) with 86 Protons
Francium Atom (Fr222) with 87 Protons
Actinium Atom (Ac222) with 89 Protons
Thorium Atom (Th232) with 90 Protons
Which of the following examples best illustrates application of Boyle’s Law?
A tire becomes harder as more air is pumped into it.
A sealed aerosol can explodes when thrown into a fire
A scuba divers stops at certain depths as he ascends to the ocean’s surface
A balloon expands and bursts when exposed to direct sunlight
Three liquids A, B, C were studied in a laboratory. Liquid A was found to float over B and C. It was also found that liquid A flows fastest among the three. What can be said about liquid A?
Densest and most viscous
Densest and least viscous
Least dense and most viscous
Least dense and least viscous
Which of the following best explains why farmers burn rice straw and hull during seasons of harvest
Burning rice hulls and straws produce compounds that act as repellant for pests which may damage plantation
Rice hulls and straws are burned so that more spaces will be available for planting next set of crops.
The smoke produced by burning rice hulls and straws stimulate growth and fruit bearing of trees
Ash from burnt rice hulls and straws are rich in compounds that could neutralize acidic soil so that more crops will grow
Acid rain occurs when _________
carbon dioxide combines with water in the atmosphere
sulfur released in burning fossil fuels combines with water in the atmosphere
phosphorus-rich water in lakes evaporates to form phosphoric acid
excess hydrogen is released into the atmosphere to produce acids
Which of the following factors contribute to an increase in human population?
I. Immigration II. Emigration
III. Natality IV. Mortality
III and IV
II and III
I only
I and III
Shown below is a simple food web in a grassy community. The arrow symbol means eaten by. What would happen if all snakes are killed?
Grass>Grasshopper>Frog>Snake
Bird>Snake
Grass population would increase
Grasshopper population would increase
Grasshopper and bird populations would increase
Bird and frog populations would increase
Fog is a cloud with its base at or very near the ground. The formation of fog generally occurs after the ground has lost heat by:
Evaporation
Conduction
Convection
Radiation
Why do we see the sun rise in the east?
The earth revolves eastward
The earth rotates from west to east
On the globe, we are located in the east
We are located in the 20th meridian
Which of the following best differentiates an earthquake's intensity from its magnitude?
Intensity describes 'the depth from which the earthquake originated’ while magnitude refers to ‘the energy of the earthquake’.
Intensity refers to the strength of the quake while magnitude refers to the degree of destruction it caused at the epicenter
Intensity cannot be measured while magnitude can be measured using a seismograph
Intensity is a measure of how much damage an earthquake cause at the surface while magnitude is the strength of the quake
Comparing the speed of sound in liquids, gases, and solids, the speed of sound is usually lowest in ____ and highest in ____
solids, gases
gases, liquids
liquids, solids
gases, solids
Which has a greater density, a lake full of water or a cupful of water?
The cup full of water
The lake full of water
Not enough information
They have the same density
A stainless steel spoon feels colder than a plastic spoon because stainless steel
absorbs less heat from the hand than plastic does
is really colder than plastic
conducts heat away from the hand faster than plastic does
has a lower temperature than plastic
