Physical sciences were divided into

The smallest change a sensitive beam balance can record is

A. 100mg

B. 10mg

C. 50mg

D. 1mg

By using prefixes, we can write 335 × 10-8 s as

A. 0.335 µs

B. 33.5 µ

C. 335 µs

D. 3.35 µs

When a standard is set for a quantity, then the standard quantity is called a

A. amount

B. rate

C. prefix

D. unit

The study of the internal structure of the Earth is known as

A. mechanics

B. nuclear physics

C. atomic physics

D. geophysics

The words or letters added before a unit and stand for the multiples or sub-multiples of that unit are called

A. mass

B. prefixes

C. units

D. rate