7th Review 12/9/24

Front

What is the definition of a fraction?

Back

A fraction is a numerical quantity that is not a whole number, representing a part of a whole, expressed as 'a/b' where 'a' is the numerator and 'b' is the denominator.

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

Define the term 'ecosystem'.

Back

An ecosystem is a community of living organisms interacting with their environment, including both biotic (living) and abiotic (non-living) components.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in the formation of new substances with different properties.

Front

What is the Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): c² = a² + b².

Front

What is the definition of an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

What is the water cycle?

Back

The water cycle is the continuous process by which water evaporates from the Earth's surface, condenses in the atmosphere, and precipitates back to the surface as rain or snow.

Front

What is the formula for calculating the volume of a cylinder?

Back

Volume = π × radius² × height.

Front

Define 'photosynthesis'.

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll, converting carbon dioxide and water into glucose and oxygen.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.