Understanding the Speed of Light and Distance Calculation

The video tutorial explains the speed of light as 3 times 10 to the eighth meters per second and uses this to calculate the time it takes for light to travel from the sun to Earth, which is approximately 8 minutes and 20 seconds. The tutorial then demonstrates how to calculate the distance between the sun and Earth using the formula distance equals rate times time. It covers dimensional analysis, simplifying expressions, and converting results into scientific notation, concluding with a final distance calculation of 1.5 times 10 to the 11th power meters.

What is the speed of light in meters per second?

• 3 times 10 to the sixth

• 3 times 10 to the seventh

• 3 times 10 to the eighth

• 3 times 10 to the ninth

How long does it take for light to travel from the sun to the earth in seconds?

• 700 seconds

• 600 seconds

• 500 seconds

• 400 seconds

How many minutes and seconds does it take for light to travel from the sun to the earth?

• 8 minutes, 20 seconds

• 8 minutes, 50 seconds

• 7 minutes, 40 seconds

• 9 minutes, 10 seconds

What formula is used to calculate the distance between the sun and the earth?

• Distance = Speed / Time

• Distance = Speed x Time

• Distance = Speed + Time

• Distance = Speed - Time

What is the purpose of dimensional analysis in this context?

• To convert time units

• To ensure correct distance units

• To calculate speed

• To find the rate

What is the result of multiplying 3 times 5 in the calculation?

• 18

• 10

• 12

• 15

What is the simplified form of 10 to the 8 plus 2 power?

• 10 to the 10th power

• 10 to the 11th power

• 10 to the 9th power

• 10 to the 12th power

Why is 15 rewritten as 1.5 in scientific notation?

• To make it less than 1

• To simplify the calculation

• To fit the scientific notation format

• To make it greater than 10

What is the final scientific notation for the distance calculated?

• 1.5 times 10 to the 11th power

• 1.5 times 10 to the 10th power

• 1.5 times 10 to the 12th power

• 1.5 times 10 to the 13th power

What is the significance of moving the decimal point in scientific notation?

• It modifies the time calculation

• It alters the unit of measurement

• It adjusts the exponent

• It changes the base number