Science: Unit 9 - Force & Motion

The measure of an object's change in position during a certain amount of time is __________.

• gravity

• friction

• speed

• position

A force is a _______ or _______.

• push

• drag

• lift

• pull

Gravity is .....

• the location of an object in relation to another object or place

• any change in the speed or direction of an object's motion

• the force that acts to pull all objects down to Earth

• the speed of an object in a particular direction

Select THREE common units of speed.

• meters per year (m/yr)

• meters per second (m/sec)

• miles per hour (mph)

• kilometers per hour (km/hr)

• miles per gallon (mpg)

What is the difference between speed and velocity?

• Velocity is faster than speed.

• Velocity is the speed of an object in a particular direction.

• Speed is the velocity of an object in a particular direction.

• Speed and velocity are the same.

__________ is the location of an object in relation to a nearby object or place.

• motion

• force

• gravity

• position

A change in position is called _________.

• relation

• gravity

• motion

• speed

Speed is calculated by .....

• dividing the distance an object travels by the time it takes to get there (distance divided by time).

• dividing the time an object spends in each location by how far apart they are (time divided by distance).

• multiplying the distance an object travels by the time it takes to get there (distance times time).

• adding the distance an object travels to the time it takes to get there (distance + time).

We are always in _________.

• trouble

• velocity

• acceleration

• motion

If it takes a chicken 4 seconds to cross a road that is 20 feet wide, what is the speed of the chicken?

• 5 ft/sec

  (feet per second)

• 24 ft/sec

  (feet per second)

• 5 mph

  (miles per hour)

• 24 mph

  (miles per hour)