Stemscopes Exam Physical Science 3

Question 1

What is the formula for calculating speed?

Accepted Answer

Speed = Distance ÷ Time

Answer

Speed = Time ÷ Distance

Answer

Speed = Distance × Time

Answer

Speed = Force ÷ Mass

Question 2

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Speed

Answer

Mass

Answer

Temperature

Question 3

What happens to light when it passes from air into glass?

Accepted Answer

It slows down and bends toward the normal

Answer

It speeds up and bends away from normal

Answer

It travels at the same speed

Answer

It is completely reflected

Question 4

Which machine increases force by using a longer effort arm than load arm?

Accepted Answer

Lever

Answer

Pulley

Answer

Inclined plane

Answer

Wedge

Question 5

What is the unit of electrical resistance?

Accepted Answer

Ohm

Answer

Volt

Answer

Ampere

Answer

Watt

Question 6

Which type of wave requires a medium to travel through?

Accepted Answer

Sound waves

Answer

Light waves

Answer

Radio waves

Answer

X-rays