Matter and Energy -  Semester Test

Matter and Energy - Semester Test

Assessment

Flashcard

Science

9th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What is scientific notation?

Back

A method of expressing numbers as a product of a coefficient and a power of 10, making it easier to handle very large or very small numbers.

2.

FLASHCARD QUESTION

Front

How do you convert a number to scientific notation?

Back

Move the decimal point in the number until only one non-zero digit remains to its left, then multiply by 10 raised to the number of places the decimal was moved.

3.

FLASHCARD QUESTION

Front

What is a dependent variable?

Back

The variable that is measured in an experiment; it is affected by changes in the independent variable.

4.

FLASHCARD QUESTION

Front

What is an independent variable?

Back

The variable that is changed or controlled in an experiment to test its effects on the dependent variable.

5.

FLASHCARD QUESTION

Front

What is a control variable?

Back

A variable that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

6.

FLASHCARD QUESTION

Front

What is average speed?

Back

The total distance traveled divided by the total time taken, usually expressed in units like km/h.

7.

FLASHCARD QUESTION

Front

What is the formula for calculating average speed?

Back

Average Speed = Total Distance / Total Time.

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