A radar detector used by a police officer measures • Average speed • Resultant velocity • Instantaneous speed • acceleration
An airplane travels 1000 miles in 2 hours. 500 miles per hour is this airplane’s ____________. • Instantaneous speed • Resultant velocity • Acceleration • Average speed
In order to determine speed, you must know • Time • Distance • Both 1 and 2 • None of the above
The difference between speed and velocity is that velocity includes • Direction • Distance • Time • weight
Which of the following does not indicate velocity? • 25 m/s NNE • 49 km/h toward downtown • 99 km/h going from Syracuse to Toronto • 44 km between Los Angeles to San Diego
What does the slope of this distance vs. time graph show you about the motion of an object? • Acceleration • Average Acceleration • Speed • Changes in Velocity
How would you describe the motion shown in the distance – time graph below? • This object is accelerating every 15 minutes • This object is changing velocity every 15 minutes • This object is moving at a constant speed
0 of 23 Acceleration Formative 1. The change of position of an object over a certain amount of time in a particular direction is • Speed • Velocity • Acceleration • displacement
0 of 23 2. The rate at which velocity changes over time in a given direction is • Speed • Velocity • Acceleration • displacement
0 of 23 3. An ice skater travels in a circle at a uniform rate of 5 m/s. Is she accelerating? • Yes, because she is going at a uniform rate. • Yes, because she is changing direction. • No, because she is going at a uniform rate. • No, because she is changing direction
0 of 23 9. Which graph below shows uniform speed? • A • B • Both A and B A. B.
0 of 23 10. Which graph below shows a car with negative acceleration? • A • B • Both A and B A. B.
Which one of the following does not result in a net force of zero? • Balanced Forces • Unbalanced forces • Constant Speed • A stationary object
A book is sitting still on your desk. Which of the following best describes the situation? • There are no forces acting on the book. • The book is moving compared to the reference frame. • There are balanced forces acting on the book. • There are unbalanced forces acting on the book.
_________ is a force that opposes the motion between two objects in contact with each other. • Motion • Friction • Acceleration • Velocity
Any change in an object’s speed is caused by: • The object’s mass. • The object’s direction. • A balanced force. • An unbalanced force.
1. A skier is at the starting gate on a hill. In order to keep the skier from going downhill, how great must the static friction acting on the skier be? • equal to the force pulling the skier downhill • greater than the force pulling the skier downhill • greater than the force pulling the skier uphill • smaller than the force pulling the skier uphill
5. A driver is headed north at 50 km/hr. A box is sitting on the seat next to him. What happens to the box if you slam on the breaks? • The box will slam into the driver • The box will slide away from the driver • The box will slide back into the seat more • The box will fall on the floor
5. A driver is headed north at 50 km/hr. A box is sitting on the seat next to him. What action by the driver will cause the box to move towards him/her? • applying the brakes • speeding up to 60km/hr • making a turn to the right • making a turn to the left
On the moon, you’re weight would... • Go up • Go down • Stay the same
A teacher dropped one light ball & one heavy ball simultaneously from the roof of a school. Ignoring air resistance, both balls struck the ground at the same time because: • they lose mass as they fall • they are influenced by the height of the building • they don’t accelerate under the influence of gravitational force. • they accelerate at the same rate, regardless of mass, due to the force of gravity.
When air resistance balances the weight of an object that is falling, the velocity: • Slowly decreases • Remains constant • Rapidly increases
Newton’s 3rd law of motion states that for every action there is an equal and opposite reaction. Pick the best example of Newton's 3rd Law. • A rocket taking off from earth which pushes gasses in one direction and the rocket in the other. • A rocket that is accelerating through space and exerts a great amount of force because its mass and acceleration is so large • A rocket sitting on the ground preparing for take-off but it needs an outside force to overcome its inertia of a non-moving object.
Which has greater momentum, a small pick-up truck traveling at 55 km/h or a full-sized bus traveling at the same speed? • The bus • The truck • Neither the bus nor truck
2h h 1. Joe raised a box above the ground. If he lifts the same box twice as high, it has • four times the potential energy • twice the potential energy • there is no change in potential energy.
2. As any object free falls, the gravitational potential energy • vanishes • is immediately converted to kinetic energy • is converted into kinetic energy gradually until it reaches the ground
3. In the next moment, the KE piece of the pie gets larger, then • The Skater is going up hill (left) • The Skater is going down hill (right) • There is no way to tell
4. In the next moment, the KE piece of the pie gets larger, then • The PE part stays the same • The PE part gets larger too • The PE part gets smaller • There is no way to tell
8. How high will pendulum rise? • Less than h • h • More than h h Reference level (h = 0)
A B D C How many of the labeled items can you name? • All 4 • 3 • 2 • 1 • 0
A B D C How many did you get correct? • All 4 • 3 • 2 • 1 • 0 crest amplitude trough wavelength
What type of radiation has the lowest frequency? • Radio Waves • Microwaves • Gamma Rays • Invisible Light
When a mechanical wave travels from a solid to a liquid medium, the speed of the wave will • Increase • Decrease • Stay the same
Which of these arrows would represent the path of a refracted ray of light? • A • B • C • D
When two sound waves interact and the sound becomes louder, this is an example of____________interference. • Destructive • Common • Double • Constructive
What feature occurs when oceanic & continental plates converge? • Mountains • Mid-ocean ridges • Ocean trenches • None of the above
The Andes are volcanic in origin. The Himalayas are not. Which one was formed by ocean-continent convergence? • Andes • Himalayas • Not enough information to know
Why are volcanoes common at convergent boundaries? • Plates reshape each other • Plate on top of subduction zone is too dense. • Plate on bottom of subduction zone is being melted. • Plate on bottom is not very dense.
Which geologic structure is an example of a divergent boundary? • Alps • Appalachian Mountains • Mid-Atlantic Ridge • Marianas Trench
Why are earthquakes common at transform fault boundaries? • Rocks slide past each other & build pressure. • Rocks are colliding & build pressure. • One rock goes under the other rock. • None of the above.
2. What type of front occurs when 2 air masses meet but neither one is displaced by the other? • Cold • Warm • Stationary • None of the above
3. Over what type of terrain are tornadoes most likely to occur? • Mountainous • Wet and swampy • Dry and flat • Snow covered
4. During the beginning of the winter season in Ohio, when the cool air moves across the warm water of Lake Erie, we experience • A rain shadow • A tornado • Lake effect snow • Dry weather
5. Warm air rising, colder air sinking is responsible for a • Warm front • Cold front • Convection current • Both 1 and 3
6. During the daytime in the air by the coast of an ocean, the following occurs: • Warm air over the land rises. • Cool ocean air moves inland. • A sea breeze results. • All of the above.
In most areas of Ohio, the frost free growing season is 150 to 180 days. Farms close to Lake Erie have a growing season closer to 200 days. One explanation for this is that • Crops grown around the lake are frost resistant. • Industries around the lake prevent early freezes. • Irrigation water from the lake freezes at lower temperatures. • Heat given off by the lake extends the number of frost free days.
0 of 23 2. Energy moves through a star by • Radiation • Convection • Radioactive decay • Both 1 and 2 • 1, 2, and 3 are correct
0 of 23 3. By studying starlight, astronomers may learn • The elements in the star • The surface temperature of the star • The speed at which the star is moving toward or away from earth • All of the above