waves energy force and motion universe velocity and acceleration

Waves

Energy

Force and Motion

Universe

Velocity and acceleration

Random

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1 - 100

In a longitudinal/ compression waves the motion of the medium is _____________ to the motion of the waves

一丁目1 - 1001 - 100

Parallel

1-200

What are the differences between radio waves and gamma rays?

1 - 100

Radio waves= long wavelength, low energy, low frequency

Gamma rays= short wavelength, high energy, high frequency

A sound wave cannot be transmitted through a __________

1 - 100

vaccum

In a compressional wave, motion of the medium is ________ to the motion of the wave.

1 - 100

Parallel

1-500

If the wavelength of a wave is 10 meters and it takes 2 seconds for every crest to pass. What is the velocity of the wave?

1 - 100

5 meters per second

2-100

1 - 100

Heat transfers from ______ object to _______

1 - 100

Warm object to cold object

2-200Rubbing two things together is an example of converting ___________ energy to ___________ energy

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Mechanical energy to thermal energy

What is the potential energy of a 100kg person standing 10 meters above the surface?

けっこん式

9800 Joules

All of these will increase kinetic energy except:A.Increase mass B.Increase velocityC.Increase heightD.Decrease friction

1 - 100

C

2-500A pot sitting on a hot burner is an example of what kind of heat transfer?

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Conduction

1 - 100When you push a penny across a long table, the penny comes to a stop. What force brings the penny to a stop?

1 - 100

Friction

Soccer ball is 500gBasketball is 700g

You kick a soccer ball and a basketball with equal force. Compare the soccer ball and basketball in terms of acceleration

1 - 100

Soccer ball will accelerate faster than a basketball because it has less mass

3-300It takes a certain force to accelerate a rollercoaster cart at 5m/s/s. How much force would it take to accelerate a cart half the mass to 5 m/s/s

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Half as much force

What is the net force?

300N 1,000N

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700N to the right

3-500As you sit on a chair, the force of gravity acts downward on your body. The reaction force is _________________

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Force of the chair pushing you upward

4-1001 - 100What are two

factors that affect the amount of gravitational force

1 - 100

Mass and distance

4-200During this process, a heavy element is broken down into lighter elements

4-200A1 - 100

Nuclear fission

4-300What are the evidences supporting the Big Bang Theory?

4-300A1 - 100-Universe is expanding

(red shift)-Cosmic Background Radiation-Abundance of hydrogen

This force keeps the moon in orbit around the earth

4-400A1 - 100

Gravitational Force

4-500What is nuclear fusion? Give an example

4-500A1 - 1004 hydrogen combine to

form 1 helium. It produces large amount of heat and light. Ex: Stars and Supernova

1 - 100A car travel from Columbus to Akron, a distance of about 200km in 2 hours.

The car’s average speed is..

5-100A1 - 100

V=d/tV=200/2V=100km/h

5-200If the net force acting on a 200 kg object is 4000N, what is the object’s acceleration

5-200A1 - 100

A=F/m A=4000N/200kgA=20m/s/s

5-300

At which point is the object at rest?

1 - 100

5-400

Acceleration can be change in ________ and change in ___________

5-400A1 - 100

1. Velocity and Direction

5-500

Describe the object’s motion

5-500A1 - 1001. Accelerate away from the origin

2. Move at a constant velocity3. Slow down (negative

acceleration) and stop for an instant

4. Turn back and accelerate the other way

5. Move at a constant velocity6. Slow down (negative

acceleration)

6-1001 - 100

Compared to wave X, which statement is correct?A.Wave Y has greater speed.B.Wave Y has less energy.C.Wave Y has a lower frequency.D.Wave Y has a shorter wavelength.

6-100A1 - 100

D

6-200If a person weighs 600N and he is lifted up to 3 meters what is the gravitational potential energy?

6-200A1 - 100GPE=mgh

GPE=weight x hGPE=600N x 3mGPE= 1800J

6-300

What are the missing terms

6-300A1 - 100

6-400

During which time interval did the person have the greatest velocity?

6-400A1 - 100From 1 to 3

seconds

6-500What keeps the rocket moving at a constant rate

A.InertiaB.Unbalanced forcesC.GravityD.Sheer will

6-500A1 - 100A. Inertia

2-500