CRMS Science 8 FERP
frictional force
What do you call the direction of a moving object that is opposite to the motion of the moving object?
volume
What do you use a graduated cylinder for?
one thousand
What does the metric prefix "kilo" mean?
65 km/hr
What is the average velocity of a car that travels 130 kilometers in 2 hours?
balanced force
A book resting on a desk is an example of what kind of force?
2 m/s^2
A car goes from zero to 8 m/s in 4 seconds. What is its acceleration?
rate
A change over time is called what?
paper clip
A gram is about the same mass as a?
air resistance
A leaf will fall through the air more slowly than a brick because of _________________.
constant speed
A runner who runs 10 m in 1 sec and 20 m in 2 sec is running at a speed that is described as what?
satellite
A smaller body revolving around a larger body (example moon) is called what?
6 m/sec
An automobile travels 30 m from its starting point in 5 sec. What is its average speed?
lunar eclipse
An eclipse that occurs when the moon passes into Earth's total shadow is called what?
solar eclipse
An eclipse that occurs when the moon's total shadow falls on Earth is called what?
weightless
An object that is in free fall seems to be ___________.
100 degrees C
At what temperature does water boil on the Celsius scale?
lunar phases
Daily changes in the moon's appearance is called what?
Accelerate
Dividing the change in velocity by the time need for that change is called what?
240 cal/g C degrees
Molly burned 5 peanuts in a calorimeter. The 40 mL of water in the beaker went from 22 degrees C to 28 degrees C. How much heat did the peanuts produce? (Hint: The specific heat of water is 1 cal/g degree C)
90 J
How much work do you do if you lift a 75 newton box from the floor to the desktop which is 1.2 meters high?
2.27 m/s^2
If a 22 kilogram rock is thrown with 50 newtons of force, what is its acceleration?
divide
If you want to calculate the acceleration of a car, you should ________ the change in velocity of the car by the time interval.
weight
If you were on the moon, there would be a change in your what?
40 km/hr
In one-half hour, a car traveled 20 km. What is its average speed?
hit the ground at the same time
In the absence of air, an acorn and an oak leaf that are dropped from the same height at the same time will do what?
momentum
In the equation p=mxv, the "p" represents?
winter
In the northern hemisphere this is the season in which the shortest day occurs.
kilogram
In which unit is mass measured?
kilometers
In which units would the length of a river most likely be measured?
290 W
Kevin pulls a 500 newton wagon 58 meters in 100 seconds. What is Kevin's power?
strong force
Newton's first law of motion states that an object stays at rest unless a __________ acts on it.
day and night
One result of the Earth's rotation.
Earth
Our most common frame of reference is?
experimenting
Scientists test their hypothesis in which step of the scientific process?
balanced forces
What causes a change in direction?
towards
The Earth is tilting towards or away from the sun during the summer?
milliliters
The amount of liquid in a drinking glass would most likely be measured in which unit?
waning
The decreasing of the moon's visible illuminated surface is called what?
waxing
The increasing of the moon's visible illuminated surface is called what?
constant velocity
What do you call it when a car moves with the engine's force that is equal to the frictional force?
deceleration
What do you call it when velocity has decreased?
mass
What do you call the amount of matter in an object?
acceleration
The motion of a car moving from a speed of 10 m/sec to 30 m/sec is called what?
revolution
The orbit of the Earth around the sun is called what?
curved
The path of a projectile is ____________.
acceleration
The rate at which velocity changes.
air resistance
The upward force on an object falling through the air is _________________.
independent variable
The variable plotted on the horizontal or x-axis of a graph is called the __________.
forces
Things that cause objects to start moving, change direction, or stop moving are called?
seasons
This is one result of the Earth revolving.
gravity
This is the cause of changes in orbital velocity.
counterclockwise
This is the direction Earth revolves around the sun.
sun
This is the only star in our solar system.
Pluto
This is the planet with the greatest period of revolution.
summer
This is the season in which the Earth is farthest from the sun.
Mercury
This planet has the fastest orbital velocity.
rotation
This usually takes 1 day or 24 hours.
V=d/t
What is the formula for velocity?
4.9 N
What is the weight of a 500 gram rock?
June
What month has the longest period of sunlight?
moon
What revolves around the Earth?
action-reaction
When a force is exerted on a box, and equal and opposite force is exerted by the box. These forces are called _________________?
centripetal force
When an object moves in a circular path, it accelerates toward the center of the circle as a result of _____________.
bowling ball
Which object has the greatest inertia? baseball, bowling ball or tennis ball?
9.8 m/s^2
acceleration due to gravity.