Chapter 1 Practice Test

7 plus 5 equals 12 because addition combines the values of the two numbers. This basic arithmetic operation is foundational for later mathematical concepts.

The sentence 'I walked to school.' uses the simple past tense to indicate a completed action in the past. The other options represent present or future tenses.

Liquids maintain a definite volume while adapting their shape to the container. In contrast, solids have both fixed volume and shape, and gases have neither.

A constitution sets out the basic principles and framework of government for a nation. While the other documents are historically significant, they do not serve the comprehensive role of a constitution.

Water boils at 100°C at standard atmospheric pressure. This temperature is a well-known scientific constant used in many practical applications.

Subtract 3 from both sides to get 2x = 8, then divide by 2 to find x = 4. This equation demonstrates basic principles of algebra.

The area of a rectangle is calculated by multiplying its length by its width. Here, 8 units multiplied by 5 units equals 40 square units.

The heart is the central organ of the circulatory system, pumping blood to all parts of the body. The other organs have different specialized functions.

Plants absorb carbon dioxide during photosynthesis, converting it into sugars while releasing oxygen. This process is vital for sustaining life on Earth.

The sentence correctly punctuates direct speech by placing a comma before the quotation and capitalizing appropriately. The other options contain punctuation errors.

The Egyptians built monumental pyramids as tombs for their pharaohs, which remain iconic symbols of ancient engineering. Other civilizations are known for different architectural achievements.

Traditionally, the Nile is recognized as the longest river in the world, even though other rivers like the Amazon are also extremely long. This knowledge is common in basic geography studies.

George Washington is celebrated as the first President of the United States and played a crucial role in the nation's founding. His leadership set many precedents for the office.

Using the slope-intercept form (y = mx + b), substitute the point (2, 5) to get 5 = 3(2) + b, which simplifies to b = -1. This problem applies fundamental concepts of coordinate geometry.

A controlled variable is maintained at a constant level during an experiment to ensure reliable results. This concept is essential for accurate scientific investigations.

The sum of the angles in a triangle is 180°. Dividing 180 by the sum of ratio parts (3+4+5 = 12) gives 15° per part, so the largest angle is 5 à - 15° = 75°. This question involves applying ratio and geometry concepts.

A Punnett square for two heterozygous parents (Aa à - Aa) produces a 1:2:1 genotypic ratio, meaning there is a 25% chance for the homozygous recessive genotype (aa). This is a basic principle of Mendelian inheritance.

Hyperbole is a figure of speech that uses extreme exaggeration to highlight a particular idea or emotion. The other choices refer to different rhetorical figures that do not serve this purpose.

The assassination of Archduke Franz Ferdinand in 1914 is widely recognized as the catalyst for World War I. This event sparked a series of alliances and conflicts that escalated into a global war.

Let the width be x and the length be 2x. The perimeter is 2(x + 2x) = 6x, which equals 36; solving gives x = 6. Thus, the area is 2x * x = 12 * 6 = 72 square meters.