Dusty Divot
List the structural levels of the body from smallest to largest: organ, tissue, organ system, organism, and cell.
cell → tissue → organ → organ system → organism
Which of the following impacts on the environment would result from deforestation: increased erosion, colder temperatures, decreased carbon dioxide, or greater oxygen production?
Increased erosion
An organism is born with a genetic abnormality not present in any of its ancestors. This abnormality is most likely the result of: circulation, mutation, competition, or respiration?
Mutation
When do organs and organ systems begin to develop in humans: before fertilization, during childhood, before birth, or during adulthood?
Before birth
Which structure is found in a plant cell but not in an animal cell: cell wall, cytoplasm, cell membrane, or nucleus?
Cell wall
Over time, these organisms evolved from a common ancestor. Which process best explains why they now have different characteristics: extinction, asexual reproduction, metabolism, or biological adaptation?
Biological adaptation
In all of these organisms, which microscopic structures carry out the major life functions: chloroplasts, wings, cells, or antennae?
Cells
In any chemical reaction, the total mass of the reactants is: less than the total mass of the products, equal to the total mass of the products, or more than the total mass of the products?
Equal to the total mass of the products
The mass of a sample of iron was measured to be 63.0 g while the volume was measured to be 8.0 cm³. What is the mass of this sample? Round your answer to the nearest tenth.
7.9 g/cm³
What can a student do to make sugar dissolve faster in water: decrease the temperature of the water, use larger pieces of sugar, stir rapidly, or use less water?
Stir rapidly
Most scientists agree that an increase in the amount of greenhouse gases entering Earth’s atmosphere causes: a decrease in sea level, a decrease in average surface temperatures, an increase in melting of polar ice caps, or an increase in crustal plate movement?
An increase in melting of polar ice caps
Earth’s hydrosphere is best described as the : relatively thin layer of rock found above Earth’s mantle, relatively thin layer of water covering most of Earth’s crust, hot liquid rock located in Earth’s outer core, or very dense rock located in Earth’s inner core?
Relatively thin layer of water covering most of Earth’s crust
Which force will decrease if the surface of a ramp is made smoother: electricity, friction, gravity, or magnetism?
Friction
The Moon’s surface is visible to an observer on Earth because the Moon: reflects sunlight, absorbs light from Earth, produces its own light, or transmits sunlight?
Reflects sunlight
Which item in a fish tank produces oxygen: plant, snail, water, or rock?
Plant
A substance in the liquid phase has: a definite shape and a definite volume; a definite shape, but no definite volume: no definite shape, but a definite volume; or no definite shape and no definite volume?
No definite shape, but a definite volume
Which weather event usually includes heavy precipitation, strong winds, and surface air temperatures below 0°C: blizzard, thunderstorm, hurricane, or tornado?
Blizzard
Which process must occur for clouds to form: erosion, condensation, conduction, or precipitation?
Condensation
Which of the following is an example of a chemical change: folding, melting, rotting, or shredding?
Shredding
Which sequence of energy transformations occurs after a battery-operated flashlight is turned on: electrical → light → chemical, electrical → chemical → light, chemical → light → electrical, or chemical → electrical → light?
chemical → electrical → light
Which of the following electromagnetic waves has the shortest wavelength: microwaves, radio waves, visible light, or x-rays?
X-rays
Three different birds have completely different beaks. The beak shape makes it easy for each bird to obtain food in a different way. The differences in beak shape are examples of: camouflage, dynamic equilibrium, competition, or biological adaptation?
Biological adaptation
Which substance do all living things require to survive: blood, carbon dioxide, water, or organic soil?
Water
In a car accident, a seat belt helps prevent injuries by applying a force: less than the force of the moving passenger, greater than the force of the moving car, in the same direction as the car’s motion, or in the opposite direction of the passenger’s motion?
In the opposite direction of the passenger’s motion
Which process transfers heat when particles collide in a solid: convection, radiation, conduction or evaporation?
Conduction