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WorksheetsMotion, Forces and Energy - Review(251pts.)
Total questions: 166
Worksheet time: 6hrs 52mins
What is speed?
how far you go
how much distance is covered over a period of time
how fast you accelerate
the change in the location of a object
What is velocity?
the quickness of an object
the location of an object
acceleration
speed in a specific direction
Can be measured in meters per second (m/s)
Distance
Time
Speed
Acceleration
A distance vs. time graph shows an object's
frame of reference
speed
acceleration
favorite food
Change in speed over a given period of time is
velocity
motion
speed
acceleration
The speed at any single instant of time?
speed
average speed
instantaneous speed
velocity
What is average speed?
distance divided by time
total distance divided by total time
speed divided by time
total speed divided by time
Which of the following is a unit for acceleration?
km/s
m/s2
mi/hr
ft
In a distance versus time graph where does the time go?
y axis
x axis
Acceleration is....
Speeding up only
Speeding up and slowing down only?
Slowing down only?
Any change in speed (faster or slower) or a change in direction.
An object is in _____ any time its position is changing.
motion
distance
speed
time
Which two quantities are needed to calculate momentum?
(a)
mass & velocity
force & velocity
force & time
mass & time
force & acceleration
Which of these equations is used to calculate momentum?
p = mv
p = m/v
p = m + v
p = v/m
Which of these units are used for momentum?
kg m/s
m/s
N/m
kg
The momentum of an object is related to the object's mass and velocity.
True
False
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
car
bike
they are equal
cannot determine using the info provided
What is the unit for mass?
m/sec
kg/sec
kg
kg m/sec
What is the momentum of a 55kg person running at 7 m/s? Do not include units
True or false: The total momentum before and after an elastic collision remains the same.
true
false
If a 100kg car has a momentum of 2000 kg m/s, how fast is it going? Do not include units
Calculate momentum and put them in order from GREATEST to LEAST momentum. (1st one should be the largest)
m = 1000
v = 50
m = 100
v = 100
m = 400
v = 15
m = 2000
v = 2
m = 1500
v = 2
In any collision (crash) the ______ is ALWAYS constant
Total Momentum
total speed
total Velocity
Energy
When two objects collide, the Pbefore is ____________ the Pafter.
more than
less than
equal to
unrelated to
Which object listed below has the greatest momentum?
A 0.05 kg object rolling at 0.2 m/s.
A 0.15 kg object rolling at 2 m/s.
A 0.15 kg object rolling at 1 m/s
A 0.4 kg object rolling at 2 m/s.
What is the unit for velocity?
m/sec
kg/sec
kg/m
kg m/sec
The momentum of an object is related to the object's mass and velocity.
True
False
A 50kg skater has a momentum of 500 kg m/s. How fast are they going? Do not include units
Before a car accident, two cars had a total momentum of 1500 kg m/s. After the collision, what is the total momentum?
not enough information
1500 kg m/s
750 m/s
3000 m/s
Juan is standing at the entrance of a park. If the distance and direction between Juan and a reference point (like a tree or a bench) in the park is considered as Juan's _____, what would that be?
displacement
neutral point
position
velocity
Christian leaves his home at 8:00 AM and walks 0.5 km to Julian's house.
At 11:30 AM, he returns home and then travels by car to the mall, which is 10 km away. He arrives at the mall at 11:45 AM.
What is the total distance Christian traveled?
2.8 km/h
10 km
10.5 km
11 km
What is the equation for momentum?
p = m/v
f = ma
f = m/a
p = mv
Maria, Niana, and Avana are observing a soccer ball being kicked into the air. They notice the ball's path curves as it moves. This curvature is caused by _____.
mass
circumference
gravity
acceleration
Average speed is found by _____.
multiplying total distance traveled by the total time
multiplying the displacement by the total time spent
dividing the displacement by the total time spent
dividing total distance traveled by the total time
_____ is the speed of an object at any given instant.
Acceleration
Average Speed
Instantaneous Speed
Velocity
Kaleb is driving his car to the grocery store. The direction and speed at which Kaleb's car is moving is described by its _____.
Acceleration
Velocity
Displacement
Average Speed
If a runner maintains a constant speed of 12 km/h, how long will it take to complete a marathon race of 42.1 km?
[You may use a calculator]
What is Bill's average running speed?
[You may use a calculator]
0.33 km/min
3.0 km/min
3.33 km/min
300 km/min
If an object has constant velocity, then it _____.
is not moving
has negative acceleration
has no acceleration
has positive acceleration
The speed of light in a vacuum is 300,000.0 km/s.
How long does it take for light to travel 150,000,000 km from the Sun to Earth?
2100 sec
8.3 min
4500 sec
0.25 hr
Jocelyn, Heidi and Angel are playing a game of tag. When Heidi is 'it', she tries to tag the others. What happens to Heidi's velocity when she is chasing Jocelyn and Angel?
[Select all that apply]
She speeds up
She stays the same speed
She slows down
She changes direction
She accelerates
If Swimmer C swam at an average speed, what was her speed in km/h?
[You may use a calculator]
4.8 km/h
2.4 km/h
2400 km/h
4800 km/h
What was Swimmer A's average speed during the period from 10 minutes to 20 minutes?
[You may use a calculator]
40 m/min
4 m/min
0 m/min
400 m/min
Axel is riding his bicycle eastward. He starts at a speed of 20 m/s and slows down to 10 m/s over a span of 5 seconds.
What is Axel's acceleration during this time?
[You may use a calculator]
10 m/s2 west
2 m/s2 east
10 m/s2 east
2 m/s2 west
Randy and Misael decided to have a friendly race on their bicycles. The graph shows how Randy's speed changed over a 0.25-hour trip.
What is Randy's average speed during the race?
2 km/h
10 km/h
20 km/h
30 km/h
How many times did Layla stop to rest after the trip had started?
[Excluding the start]
1
2
3
4
Two tennis balls are at the same height and released at the same time. One ball is dropped and hits the ground 5 seconds later. The other initially moves horizontally at 13 m/s.
In how many seconds will second ball hit the ground?
Two tennis balls are at the same height and released at the same time. One ball is dropped and hits the ground 5 seconds later. The other initially moves horizontally at 13 m/s.
How many meters does the second, green tennis ball travel horizontally?
Which best demonstrates friction?
an ice skater sliding on ice
a car rolling to a stop at a traffic light
a baseball moving in a projectile motion
the free fall of astronauts in orbit
Forces that cancel each other are called (a) forces.
balanced
inactive
neutral
null
unbalanced
Organize these options based on the description of the measured variable.
Is the product of mass and gravitational strength
Is a measurement of the amount of matter, in an object.
Can be explained using the concept of a field.
On Earth, this constant is 9.8 m/s2.
Has units of Grams (g) and Kilograms. (kg)
Has units of Newtons (N) or Pounds (lbs.)
On Earth, what is the weight of a large-screen TV that has a mass of 75 kg?
[Round answer to nearest WHOLE number in Newtons]
Suppose you are standing on a scale in an elevator that is accelerating upward.
Will the scale read your weight as larger or smaller than the weight it reads when you are stationary?
Explain.
Larger, the force that the scale exerts on you is greater than your weight; the reading would increase.
Larger, The force that the scale exerts on you is less than your weight; the reading would decrease.
Smaller, The force that the scale exerts on you is less than your weight; the reading would increase.
Smaller, The force that the scale exerts on you is greater than your weight; the reading would decrease.
How does the gravitational force change as two objects move farther apart?
Gravitational strength increases.
Gravitational strength decreases.
Gravitational strength does not change.
Gravitational strength balances with weight.
Use the following terms to complete the concept map on forces:
Mass
Friction
Distance
Air Resistance
Speed
What does this graph represent?
Constant Speed
Acceleration
Not moving
What is speed in the context of a car journey?
how far the car goes
how much distance the car covers over a period of time
how fast the car accelerates
the change in the location of the car
What is the formula to calculate speed?
S = t/d
S = d/t
S = d x t
S = t x d
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
10 m/s
1000 m/s
100 seconds
10 seconds
What is this graph showing?
Constant Speed
Acceleration (speeding up)
Deceleration (slowing down)
No motion
What is this graph showing?
Constant Speed
Acceleration (speeding up)
Deceleration (slowing down)
No motion
What is this graph showing?
Constant Speed
Acceleration (speeding up)
Deceleration (slowing down)
No motion
What is happening in this graph from point A to B?
The object is accelerating.
The object is not moving.
The object is decelerating.
The object is moving at a constant speed.
How many times does this object STOP moving?
[NOT including the start]
None
Once
Twice
Three times
At 60 seconds, how far had this object traveled?
0 m
10 m
20 m
40 m
How long did it take this object to travel 10 m?
0 s
10 s
15 s
20 s
A push or a pull are examples of
Force
Motion
Weight
Mass
If Rongzhen kicks a soccer ball across the field, what force acts between the ball and the grass, causing the ball the slow down and stop?
Gravity
Acceleration
Friction
Force
This game of tug of war (one team is winning) is an example of _________ forces.
Net Zero
Balanced
Unbalanced
Potential
Calculate the Net Force.
60N, Right
60N, Left
40N, Left
40N, Right
When pushing a shopping cart with a certain force, the acceleration of the cart is determined by _____.
F = m/a
p = m × v
a = F/m
p = m/v
When the force applied to a car's accelerator is increased, what happens to the car's acceleration?
It decreases.
It fluctuates.
It increases.
It stays the same.
When basketball is thrown, it moves forward, and the foot feels a force in the opposite direction. This illustrates the principle that “to every reaction there is an equal and opposite reaction,” which is _____.
the law of conservation of momentum
Newton’s first law of motion
Newton’s second law of motion
Newton’s third law of motion
A student pushes on a 5-kg box with a force of 20 N forward.
The force of sliding friction is 10 N backward.
What is the acceleration (a=?) of the box in N/kg?
[WHOLE Numbers only, NO UNITS]
Find your mass (in kg) if a scale, on Earth, reads 650 N when you stand on it.
[NO units and Round to the nearest tenth (i/e: 10.1)]
When a falling object reaches terminal velocity, the force of gravity _____ the force of air resistance.
is related to
is greater than
is less than
is equal to
When an object moves in a circular path, the net force is called a(n) (a) (b) .
centripetal
force
centrifugal
velocity
speed
momentum
Describe what happens to the momentum of two billiard balls that collide.
If there are no outside forces, the momentum of two colliding billiard balls is the same before and after the collision.
If there are no outside forces, the momentum of the 8-ball is the greatest because you have to make that one last.
If there are no outside forces, the forces cancel and the balls stop.
If there are no outside forces, the velocities will both be in the same direction.
When a rocket lifts off, its upward momentum is matched by the downward momentum of _____.
nothing
hot gases expelled by the rocket
air pushed out of the way by the rocket
the launch pad
What principle explains the behavior of a balloon that is released before being tied and flies around the room?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
Conservation of Energy
On the Moon (with no Air), if a feather and a hammer are dropped at the same time from the same height, what will happen?
The feather will hit the ground first
The hammer will hit the ground first
They will hit the ground at the same time
They will float indefinitely
Suppose you are standing on a scale in an elevator that is accelerating upward.
Will the scale read your weight as larger or smaller than the weight it reads when you are stationary?
Explain.
Larger, the force that the scale exerts on you is greater than your weight; the reading would increase.
Larger, The force that the scale exerts on you is less than your weight; the reading would decrease.
Smaller, The force that the scale exerts on you is less than your weight; the reading would increase.
Smaller, The force that the scale exerts on you is greater than your weight; the reading would decrease.
Use the following terms to complete the concept map on forces:
Mass
Friction
Distance
Air Resistance
Speed
Forces that cancel each other are called (a) forces.
balanced
inactive
neutral
null
unbalanced
Slamming on the brakes in a moving car makes a passenger move forward against his or her seat belt because
the passenger has the inertia to keep moving forward
the passenger is being pushed by the seats of the car
the passenger is better able to stop themselves in this manner
the passenger has an equal and opposite force supporting their weight
Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?
The mass of the car is greater than the mass of the basketballs
The mass of the bowling balls is greater than the mass of the basketballs
The van with the basketballs is bigger than the van with the bowling balls
It should be equally as hard to push the two vans
Which of these is an example of Newton's Second Law, F=ma
a tug of war where both sides pull equally, and the rope doesn't move
a wide receiver using his hands to stop and catch a football thrown by the quarterback
a car traveling on a straight part of the highway with a cruise control set at constant velocity
a book pushing down on the desk where it is resting
When a Civil War era cannon is fired, the force of the gas produced by exploding powder propels the cannonball forward at a high speed. According to Newton's 3rd law
the cannon itself moves backward
the cannon itself does not move due to inertia
the cannon itself moves forward as well with the momenturm
the cannon itself moves forward with the inertia of the cannonball
A 20 kg bike accelerates at 10 m/s2. What was the force?
25 Newtons
20 Newtons
200 Newtons
10 Newtons
Approximately how much work do you do (in Joules) when you lift your 10.0 kg sister to a height of 1.5 m?
NOTE: MASS x GRAVITY = WEIGHT [FG]
[NUMBER ONLY/ NO UNITS]
A particular lever is 90.0% efficient. If 50.0 J of input work are done on the lever, then how much output work does the lever do, on its load?
[NO UNITS/ NUMBER ONLY]
The mechanical advantage of a pulley system is 4.00. Using this pulley system, how much force do you need to exert to lift a 500.0 N box?
[Reminder: Pulleys REDUCE force through Mechanical Advantage]
[NO UNITS/ NUMBER ONLY]
Which simple machines represent variations of an inclined plane? [Select all that apply]
wedge
wheel and axle
lever
pulley
screw
Which factor increases as the efficiency of a machine increases? [MORE EFFICIENT]
More input work
More output work
Friction
Air Resistance
It takes 600 J of work to lift a person up but 1200 J to push that person up a ramp to the same height.
What is the efficiency of the ramp?
0%
25%
50%
100%
An input force of 80 N is used to lift an object weighing 240 N with a system of pulleys. What is the mechanical advantage of the pulley system?
1
3
0.33
19,200
Organize these machines by how they are useful.
Bicycle
Wedge/ Axe
Car Jack
Trebuchet
What percent of Work is done at 60o?
10%
35%
50%
0%
What percent of Work is done at 90o?
10%
35%
50%
0%
What angle do work equal 80%?
10
35
50
70
What angle do work equal 20%?
10
35
50
80
Potential energy is-
the movement of heat
stored energy
when energy changes from one form to another
energy of a moving object
Kinetic energy is-
the movement of heat
stored energy
when energy changes from one form to another
energy of a moving object
Thermal energy is-
the movement of heat.
stored energy.
when energy changes from one form to another.
energy of a moving object.
When a soccer ball is kicked towards the goal, what two factors determine the ball's kinetic energy?
the ball’s position and mass
the ball’s speed and surface area
the ball’s velocity and mass
the ball’s speed and position
_______ is stored energy due to the interactions between objects.
Potential energy
Entropy
Thermal
Kinetic
What two factors affect how much gravitational potential energy an object-Earth system has?
the object’s mass and height above the ground
the object’s speed and mass
the object’s speed and surface area
Earth's size and the object's mass
______ is energy stored by things that stretch or compress.
Elastic kinetic energy
Gravitational potential energy
Elastic potential energy
Chemical kinetic energy
The form of energy stored in the food we eat is _______.
thermal potential energy
chemical potential energy
energy of activation
chemical kinetic energy
Which has the most kinetic energy from its motion?
a 300-kg motorcycle traveling 100 km/h on a highway
a 2,000-kg truck traveling 50 km/h in a city
a 1,100-kg car traveling 60 km/h on a country road
a 900-kg car traveling 80 km/h on an expressway
What is the approximate gravitational potential energy of a diver-Earth system, if the diver has a mass of 80-kg and is 8.0 m above the reference level? note: g = 9.8 m/s2
50,042 J
6,272 J
3,700 J
18,573 J
Which of these best shows a change from potential to kinetic energy?
Water flowing over a tall cliff
A rubber band being stretched
Electricity making a bulb light up
A stone lying on top of a mountain
A truck is parked at the bottom of a hill. It moves from the bottom of a hill and parks at the top. Compared to when it was parked at the bottom of the hill at its new position, the truck now has -
more potential energy.
more kinetic energy
less potential energy
less kinetic energy
The illustration shows a rollercoaster and indicates four different positions the car might be at as it moves along the track. At which point in the rollercoaster's journey is its potential energy the greatest?
W
X
Y
Z
When would a skateboarder have the most potential energy?
While rolling down the ramp
While moving up the ramp
At the bottom of the ramp
At the top of the ramp
A car moving at a constant speed down the highway has ____________ energy.
Potential
Energy
Kinetic
Friction
The faster an object moves, the ________ kinetic energy it has.
more
less
none of the above
all of the above
What kind of energy is in a rock at the edge of a cliff?
Potential
Kinetic
What kind of energy is in a moving skateboard?
Potential
Kinetic
Gasoline
Stretched Rubberband
Cliff diver
Food
metetre
Meteorite
Methane gas has (a) potential energy.
Which sequence describes the energy conversions in a car engine?
kinetic to potential to mechanical
thermal to mechanical to chemical
mechanical to thermal to chemical
chemical to thermal to mechanical
A roller coaster starts at the top of a hill and rolls to the top of a lower hill. If mechanical energy is constant, then the kinetic energy from the roller coaster’s motion is greater on the top of (a) hill.
the lower
the higher
neither
The mechanical energy of a bicycle at the top of a hill is 6000 J. The bicycle stops at the bottom of the hill by applying the brakes. If the gravitational potential energy of the bicycle-Earth system is 2000 J at the bottom of the hill, how much mechanical energy was converted into thermal energy? [Numbers only/NO UNITS]
A person weighing (f) 500 N climbs (h) 3 m. How much power, in Watts, is needed to make the climb in (t) 5 s?
[NUMBERS ONLY/ NO UNITS]
Apply the law of conservation of energy and describe the energy transformations that occur as you coast down a long hill on a bicycle and then apply the brakes to make the bike stop at the bottom.
Apply the law of conservation of energy and describe the energy transformations that occur as you coast down a long hill on a bicycle. What type of Energy Conversion happens.
Coasting down the hill transforms gravitational potential energy into thermal energy
Coasting down the hill transforms gravitational potential energy into kinetic energy
Coasting down the hill transforms chemical potential energy into gravitational potential energy
Coasting down the hill transforms kinetic energy to thermal energy
Apply the law of conservation of energy and describe the energy transformations that occur as you apply the brakes to make the bike stop at the bottom.
Applying the brakes transforms potential energy into thermal energy.
Applying the brakes transforms kinetic energy into nuclear energy.
Applying the brakes transforms kinetic energy into radiant energy.
Applying the brakes transforms kinetic energy into thermal energy.
The system has both Kinetic and Potential Energy.
What type of energy is the sum of Kinetic and Potential Energy?
(a)
For the biker, if they calculated how much Energy (E) they used over time (t), then the biker would know what measurement?
(a)
Which factor increases as the efficiency of a machine increases? [MORE EFFICIENT]
More input work
More output work
Friction
Air Resistance
It takes 600 J of work to lift a person up but 1200 J to push that person up a ramp to the same height.
What is the efficiency of the ramp?
0%
25%
50%
100%
An input force of 80 N is used to lift an object weighing 240 N with a system of pulleys. What is the mechanical advantage of the pulley system?
1
3
0.33
19,200
Organize these machines by how they are useful.
Bicycle
Wedge/ Axe
Car Jack
What percent of Work is done at 60o?
10%
35%
50%
0%
What angle does work equal 80%?
10
35
50
70
Thermal energy is-
the movement of heat.
stored energy.
when energy changes from one form to another.
energy of a moving object.
When a soccer ball is kicked towards the goal, what two factors determine the ball's kinetic energy?
the ball’s position and mass
the ball’s speed and surface area
the ball’s velocity and mass
the ball’s speed and position
______ is energy stored by things that stretch or compress.
Elastic kinetic energy
Gravitational potential energy
Elastic potential energy
Chemical kinetic energy
The form of energy stored in the food we eat is _______.
thermal potential energy
chemical potential energy
energy of activation
chemical kinetic energy
Which has the most kinetic energy from its motion?
a 300-kg motorcycle traveling 100 km/h on a highway
a 2,000-kg truck traveling 50 km/h in a city
a 1,100-kg car traveling 60 km/h on a country road
a 900-kg car traveling 80 km/h on an expressway
What is the approximate gravitational potential energy of a diver-Earth system, if the diver has a mass of 80-kg and is 8.0 m above the reference level? note: g = 9.8 m/s2
50,042 J
6,272 J
3,700 J
18,573 J
Gasoline
Stretched Rubberband
Cliff diver
Food
metetre
Meteorite
The Law of Conservation of Energy states that energy is never (a) or (b) , only transferred.
created
destroyed
measured
visable
calculated
When a pendulum swings, at which point is kinetic energy greatest? [select all that apply]
1
2
3
4
5
When a pendulum swings, at which point is potential energy greatest?
[select all that apply]
1
2
3
4
5
What is the KE half way down?
50 J
25 J
0 J
100 J
What is the KE 1/4 the way down, when PE is 11,250 Joules?
15,000 J
3,750 J
7,500 J
11,250 J
The transfer of energy through matter by the direct contact of particles is called (a) .
heat
temperature
thermal energy
kinetic energy
When you measure the (a) of an object, you are measuring the (b) of its particles.
temperature
average kinetic energy
heat
potential chemical energy
Use the table (not in order) to categorize the materials based on specific heat.
Temperature changes most/ fastest
Gold
Temperature change is moderate compared to others
Copper
Temperature changes least/ slowest
Aluminium
The speed of the particles that make up a hot object (a) when the object’s temperature increases. The (b) of the atoms and molecules increases when temperature increases.
decrease
potential energy
Order the process by which the calorimeter is used to measure the specific heat of materials. [Left (step 1) to Right (step 4)]
A known mass of water is placed in the inner chamber. the water's initial temperature is measured.
Then, the scientist finds the mass of an unknown substance. That substance is heated, and its initial temperature is measured.
The unknown substance is placed in the water. The substance is allowed to transfer thermal energy to the water until both are at the same temperature.
This temperature is then measured. From this data, you can calculate the specific heat of the unknown substance.
Which material would require the most heat to raise a 5-kg sample of the material from 10°C to 50°C?
Gold
Copper
Lead
Tin
Zinc
A 2-kg block of which material would require about 450 joules of thermal energy to increase its temperature by 1°C?
Q=m(Tf - Ti)C
Gold
Copper
Lead
Tin
Zinc
Approximately how much does the temperature of .033 kgs of graphite change when it absorbs 350 J of thermal energy?
Q=m(Tchange)C
0o
100o
5o
15o
The transfer of energy through matter by the direct contact of particles is called (a) .
conduction
convection
radiation
kinetic energy
(a) is the transfer of energy in the form of electromagnetic waves.
Radiation
Convection
Conduction
Potential Energy
Which type of energy transfer does not require matter?
Conduction
Convection
Radiation
Transmission
Which of the following types of thermal energy transfer is primarily responsible for heating the water?
[Select all that apply]
conduction
convection
radiation
nuclear radiation
gravity
Conduction can occur in solids, liquids, and gases.
Explain why solids and liquids are better conductors than gases.
Solids and liquids are better conductors of thermal energy because collisions occur much more frequently between the particles of solids and liquids than between the particles of gases
Solids and liquids are better conductors of thermal energy because solids and liquids have higher specific heat
Solids and liquids are better conductors of thermal energy because empty space can transfer electromagnetic radiation
Solids and liquids are better conductors of thermal energy because gasses do not have mass
How will the thermal energy, in room A, move from the pot to its handle? (a)
Conduction
Convection
Radiation
From the Iron
From the Fireplace
How will the thermal energy, in room D, move from the Iron to the clothes? (a)
Convection
Radiation
From the Iron
From the Fireplace
Residual heat from Earth's formation, and radioactive elements in Earth’s core and mantle decay and give off heat. As parts of the mantle heat up, they become (a) and rise to the base of the crust. When the material cools it then (b) . Deeper down, the mantle material heats up again and rises to the surface. This up and down movement is a (c) current.
less dense
sinks
convection
more dense
rises
conduction
The Sun’s energy (a) Earth’s atmosphere. High above Earth in the stratosphere, solar radiation is intense. Earth’s surface directly absorbs about half of the (b) energy from the Sun. This energy transfers to (c) on Earth’s surface. The natural process in which certain gases in the atmosphere warm a planet as they absorb and emit infrared radiation is the (d) . The greenhouse effect keeps Earth warm by absorbing and trapping heat near the surface.
greenhouse effect
heats
radiant
global climate change
cools
convection
thermal energy
Oceanic currents happen because of what type of thermal energy transfer?
Conduction
Convection
Radiation
Nuclear
Liquids which keep some ordered structure are (a) .
Liquid Crystals
Solids
Amorphous Solids
Gases
Organize these options into the right based on the state of Matter.
Particles cannot overcome attractive forces.
Particles can partially overcome attractive forces.
Particles can fully overcome attractive forces.
PArticles have enough energy to overcome attractive forces within atoms.
What are the assumptions made by the kinetic theory of gases?
[Select all that apply]
All matter is composed of tiny particles. (atoms, molecules or ions)
Particles are in constant, random motion.
The particles collide with each other and the walls of the container in which they are in.
The energy lost from collisions with each other and the walls, is negligible.
Water has a few special properties that make it necessary for life. What property was discussed in this lesson?
When water freezes it is more dense, so it floats.
When water freezes it is less dense, so it floats.
When water freezes it is more dense, so it sinks.
When water freezes it is less dense, so it sinks.
This graph shows how (a) changes as (b) . Notice the two areas where the temperature does not change. At 0o Ice is (c) . All of the (d) put into the ice at this temperature is used to overcome the (e) between the particles.
