Unit 4 Waves & EM Spectrum

Front

What affects the speed of a wave?

Back

The medium it travels through.

Front

Electromagnetic radiation from the sun bombards our atmosphere constantly. The Earth's atmosphere protects us from exposure to a range of higher energy waves that can be harmful to life. Gamma rays, x-rays, and some ultraviolet waves are ionizing which means they have a higher energy that can knock electrons out of atoms. Exposure to these types of waves can cause damage to cells in living tissue. Which of the following statements is correct according to the reading passage?

Back

The higher the frequency of the wave, the greater the likelihood it will cause damage to living tissue.

Front

What do waves transfer?

Back

energy

Front

What is the primary difference between transverse and longitudinal waves?

Back

The direction of particle movement relative to wave propagation

Front

If the mass of the object was doubled and the force remained the same, what would happen to the acceleration? Hint: a=f/m

Back

It would be halved

Front

A heavyweight boxer winds up and punches a punching bag. Which of the following is true?

Back

The force acting on the bag is equal and opposite to the force acting on the fist.

Front

The diagram below shows two balls of equal mass. Ball X is moving toward Ball Y at 2 m/s and Ball Y is at rest. What is the initial velocity of Ball X?

Back

2 m/s

Front

When ball X collides with ball Y, ball X stops moving. Which of the following best describes the motion of ball Y after the collision?

Back

It will move to the right 2 m/s

Front

Why do heavy trucks take longer to stop than cars?

Back

Because they have more momentum due to their greater mass.

Front

What would happen to an unsecured object on the dashboard during sudden braking?

Back

It would move forward.