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 is an example of a chemical change: cutting, evaporating, melting, or rusting?
Rusting
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: cytoplasm, mitochondria, chloroplasts, or vacuole?
Chloroplasts
Over time, organisms evolve 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 organisms, which microscopic structures carry out the major life functions: chloroplasts, wings, cells, or antennae?
Cells
Which of the following is an example of a physical change: baking, burning, freezing, or rotting?
Freezing
What is the density of a liquid with a volume of 55 ml with a mass of 93 g? Round your answer to the nearest tenth.
1.7 g/ml
A student is trying to dissolve 20 grams of sugar in a beaker containing 250 milliliters of water at room temperature. What can the student do to make the sugar dissolve faster in the 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 of the following types of electromagnetic waves has the shortest longest wavelength: gamma rays, infrared waves, microwaves, or x-rays?
Microwaves
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
Which of the following occurs when a solid turns into a liquid: condensation, evaporation, freezing, or melting?
Melting
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
All matter is made up of particles called : cells, atoms, molecules, or compounds?
Atoms
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
Running to escape danger is an action that requires the nervous system to coordinate the interaction of which two body systems: digestive and endocrine, muscular and skeletal, reproductive and excretory, or circulatory and digestive?
Muscular and skeletal
Which force holds the planets in orbit around the Sun: friction, gravity, magnetism, or solubility?
Gravity
Which substance do all living things require to survive: blood, carbon dioxide, water, or organic soil?
Water
Dirt, rocks, and sand are part of which of the following spheres: atmosphere, biosphere, geosphere, or hydrosphere?
Geosphere
Erupting volcanoes allow pieces of which layer of the Earth to be obtained: crust, inner core, mantle, or outer core?
Mantle