Unit 8: Waves

Electromagnetic Spectrum

100

Which of these correctly shows types of radiation increasing in energy?

1. cosmic rays → x-rays → microwaves → TV waves
2. microwaves →TV waves → x-rays → cosmic rays
3. TV waves → microwaves → cosmic rays → x-rays
4. TV waves → microwaves → x-rays → cosmic rays

D. TV waves → microwaves → x-rays → cosmic rays

[As wavelength decreases, frequency increases & energy increases]

200

What 3 parts of the electromagnetic spectrum that allow us to study and record detailed images from space?

1. Visible light

2. Infrared radiation

3. X-rays

300

Compare radio waves and infrared waves in terms of wavelength & frequency. 

A radio wave has a longer wavelength and a lower frequency than an infrared wave.

400

What do you notice about both gamma rays & X rays? 

Some gamma rays can have the same frequency as X rays

500

Compare gamma rays to the other components of the electromagnetic spectrum [in terms of wavelength, frequency, & energy].

Gamma rays have the shortest wavelengths, highest frequencies, and greatest energies.

Refraction, Reflection, & Absorption

100

During a science experiment, Miss Butalia notices that a black t-shirt heats up more quickly than a white one under the same sunlight. Which phenomenon of light does this observation best exemplify?

Absorption 

200

Ms. Swoch shines a thin beam of light onto a material. The light beam refracts. Which of the diagrams shown below best shows what happens to the light?

A. 

B. 

C. 

D. 

D. 

300

Which concept explains why the pencil does NOT appear to be straight in the glass of water?

Refraction of light

400

In which of these cases is light reflection primarily observed?

1. Light passing through a transparent window and appearing faint on the other side.
2. Light shining on a pond at noon showing different depths by color variation.
3. Light from a flashlight passing through frosted glass.
4. Sunlight bouncing off the surface of a calm lake, creating a shimmering effect.

D. Sunlight bouncing off the surface of a calm lake, creating a shimmering effect.

500

What happens to light when it passes through a prism?

It is refracted and separated into a spectrum of colors

Sound vs. Light Waves

100

In comparison to how they move through air (gases), how do sound waves behave when they pass through solids?

They travel faster because solids are more densely packed than gases.

200

Light waves travel at different speeds through different mediums. List the correct order of increasing speed of light waves from slowest to fastest?

Light waves will travel slowest → fastest in...

solids → liquids → gases

300

When students perform an experiment in class using lasers and different containers filled with water, oil, and air, they notice a change in the speed of the light waves. Why?

Light waves move at different speeds through different materials.

400

Two objects have a certain gravitational force between them. What would happen if the mass of one of the objects suddenly increased?

The gravitational force between the objects would increase.

500

What type of force caused the girl's hair to cling to the balloon?

Electrical force

The Law of Gravity, Forces, & More

100

Over what time period was the speed of the car the fastest? 

From 6 to 12 seconds.

200

A book is sitting on the table at rest. The forces acting on the book include _____, and these forces are _______.

Gravity pulling down and the table pushing up; balanced.

300

The gravitational pull will be lowest between which two spheres?

A. 

B. 

C. 

D. 

D. 

400

Yoni and Julian rolled four marbles down a ramp. They measured the distance each marble rolled and the time until each marble came to a stop. They plotted each point and connected it with a line from origin of the graph.

Which marble had the greatest average speed?

Marble A

500

Which of the following conditions would cause the airplane to ascend from the ground?

A. The thrust is less than the drag

B. The thrust is equal to the weight

C. The lift is equal to the drag

D. The lift is greater than the weight

D. The lift is greater than the weight

Mystery!

100

Students are conducting an experiment assessing how color affects the amount of solar energy that is absorbed. Students will make construction paper pockets out of 3 different colors of construction paper. Students will place a thermometer in the pocket. Each pocket will be placed under a standard desk lamp for 1 minute. After 1 minute the temperature will be recorded in degrees Celsius (°C). Three trials will be completed for each color pocket.

What is the test (independent) variable in this experiment? 

The color of the paper

200

The table shows the hawk and mouse populations in a given environment over a period of 40 years. Hawks prey on mice as a main food source.

Which of these statements is best supported by the data?

1. The growth rate of hawks was slowest between 1980 and 1990.
2. The growth rate of hawks was greatest between 2000 and 2010.
3. The growth rate of mice was greatest in 2000.
4. The growth rate of mice was least in 1990.

D. The growth rate of mice was least in 1990.

300

Energy from the Sun travels through space to Earth. What property of the Sun's radiation do Scientists use to classify the radiation into different categories?

They classify it by the WAVELENGTH of the radiation.

400

Telecommunications are able to send information using radio waves as well as visible light waves.  The wavelength of radio waves is longer than the wavelength of visible light.  How does the frequency of radio waves compare to the frequency of visible light?

Radio waves have a lower frequency than visible light.

500

Andy carried out an experiment to separate the components in a mixture. The steps Andy took are shown in the illustration below.

What forces did Andy depend upon to separate the components in this mixture?

Magnetic and gravitational forces