EF_CH8 TIME

Multiple Select

A fundamental unit is an identifiable quantity used to describe physical surroundings and conditions. Select the other fundamental units below-

• length

• mass

• time

• density

Multiple Choice

What is it called when the value of a physical quantity under investigation does not change with time?

• dead

• steady state

• transient

• homeostatis

Multiple Choice

What is the SI base unit of time?

• hour

• minute

• second

• day

Multiple Choice

What is the SI unit of time based on?

• duration of 9,192,631,770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of cesium 133 atom

• how long class seems to feel in Mrs. Bertke's room

• duration of 9,192,631,770 periods of the radiation corresponding to the transition between the 2 hyperthick levels of the ground state of carbon 12 atom

• the amount of time the Earth takes to revolve once at Pontianak divided by 24, then divided by 60

Multiple Choice

What is the term defined by the arcs that divide the Earth into 360 circular arcs that are spaced east to west and pass through Greenwich, England?

• minute

• latitude

• longitude

• second

Multiple Choice

What does every 15-degrees longitude corresponding to?

• 15 minutes

• 30 minutes

• 60 minutes

• 90 minutes

Open Ended

How are periods and frequencies related?

Multiple Choice

If the number of vehicles per hour is increased and the average speed is the same, how is the traffic density is changed?

• it is increased

• it is unchanged

• it is decreased

• I'm not reading this

Multiple Select

A fundamental unit is an identifiable quantity used to describe physical surroundings and conditions. Select the other fundamental units below-

• length

• mass

• time

• density

Multiple Choice

Which is the closest value to the average speed of a person walking?

• 4.3 ft/ s

• 29 mph

• 13.3 m / s

• 47 km/ h

Open Ended

How are speed and velocity different?

Open Ended

How could we determine the flow rate of a drinking fountain? What would we measure?

Multiple Choice

If the diameter of the Earth is approximated at 12751 km, what is the speed of a person at the equator due to the rotation?

• 1670 km /h

• 46.4 m/s

• 103.7 mph

• I still am not doing this. Please write me up.

Multiple Choice

What type of unit is 9.81 m/s²?

• velocity

• acceleration

• time

• length

Multiple Choice

What is the closest approximation of the speed of a NASCAR car during a race?

• 3000 km /h

• 200 mph

• 90 mps

• 767 mph