ES 1st Sem Test

ES 1st Sem Test

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is gene flow?

Back

Gene flow is the transfer of genetic variation (diversity) from one population to another, which tends to increase genetic variation.

2.

FLASHCARD QUESTION

Front

What happens when forces on an object are unbalanced?

Back

When forces are unbalanced, the net force is any positive or negative number but not zero, resulting in a change in motion.

3.

FLASHCARD QUESTION

Front

How do you calculate acceleration?

Back

Acceleration is calculated by the change in velocity divided by the time taken. For example, if a train traveling at 30 m/s brakes to a stop in 60 seconds, its acceleration is -0.5 m/s².

4.

FLASHCARD QUESTION

Front

What is evolution?

Back

Evolution is the process by which modern organisms have descended from ancient organisms, involving changes in genetic traits over generations.

5.

FLASHCARD QUESTION

Front

How do you calculate average speed?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. For example, a train that travels 100 kilometers in 4 hours has an average speed of 25 km/h.

6.

FLASHCARD QUESTION

Front

What is the net force when forces are balanced?

Back

When forces are balanced, the net force is 0, meaning there is no change in motion.

7.

FLASHCARD QUESTION

Front

What is the formula for acceleration?

Back

The formula for acceleration (a) is a = (final velocity - initial velocity) / time.

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