ES 1st Sem Test

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.

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.

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.

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.

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.

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.

Front

What is the formula for acceleration?

Back

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

Front

What is the significance of negative acceleration?

Back

Negative acceleration, or deceleration, indicates that an object is slowing down.

Front

What is genetic variation?

Back

Genetic variation refers to the diversity in gene frequencies within a population, which is essential for evolution.

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.