Physics Quiz on Motion and Electricity

Which of the following is the measure of duration of events and the intervals between them?

• distance

• time

• speed

• velocity

Answer explanation

The measure of duration of events and the intervals between them is referred to as 'time'. It quantifies how long events last and the gaps between them, distinguishing it from distance, speed, and velocity.

Which of the following is the measure of how far or near two points are from one another?

• distance

• time

• speed

• velocity

Answer explanation

The measure of how far or near two points are from one another is called distance. Time, speed, and velocity relate to motion but do not specifically quantify the separation between points.

What is the speed if the distance is in kilometer and time is in hour?

• km. / hr

• m / hr

• m / sec.

• km. / sec.

Answer explanation

The speed is calculated as distance divided by time. When distance is in kilometers and time is in hours, the resulting unit for speed is kilometers per hour (km/hr), making 'km. / hr' the correct choice.

A jeepney travels 120 kilometers in 3 hours. What is the average speed?

• 40 km/h

• 43 km/h

• 60 km/h

• 120 km/h

Answer explanation

To find the average speed, divide the total distance by the total time. Here, 120 km ÷ 3 hours = 40 km/h.

Find the speed of a motorbike that travels 400 km in 8 hours.

• 40 km/h

• 30 km/h

• 50 km/h

• 60 km/h

Answer explanation

To find the speed, divide the distance by time: 400 km ÷ 8 hours = 50 km/h. Therefore, the speed of the motorbike is 50 km/h.

Ana walks 5 hours to reach the plaza with a distance of 300 km. What is her average speed?

• 40 km/h

• 30 km/h

• 50 km/h

• 60 km/h

Answer explanation

To find the average speed, divide the total distance by the total time. Here, average speed = 300 km / 5 hours = 60 km/h.

A car traveled 30 kilometers for 2 hours, what is its speed?

• 15 km/h

• 28 km/h

• 30 km/h

• 60 km/h

Answer explanation

To find speed, use the formula: speed = distance/time. Here, distance = 30 km and time = 2 hours. So, speed = 30 km / 2 h = 15 km/h. Therefore, the correct answer is 15 km/h.

Why do we need to use the metric system of measurement?

• Because it is used by many scientists.

• Because it is important to describe motion.

• Because it is necessary to describe movement.

• Because it is easier to understand each other's data.

Answer explanation

The metric system facilitate clear communication and data sharing across various fields. This standardization helps ensure consistency and accuracy in measurements.

Cooking pans use aluminum material because it is ____

• a good conductor of electricity

• a good conductor of heat

• has a very high density

• strong

Answer explanation

Cooking pans use aluminum because it is a good conductor of heat, allowing for even cooking and efficient heat distribution. This property makes aluminum ideal for cookware, unlike the other options listed.

Which of the following materials normally use heat and electricity in order to function?

candle, electric kettle, heater flat iron

• I, II and III

• II, III, and IV

• I, III, IV

Answer explanation

The correct answer includes all options: a Candle uses heat, while an Electric Stove, Water Heater, and Washing Machine use both heat and electricity to function. Thus, all four materials utilize heat and electricity.