High School Physics

If the absolute brightness of a star changes, all but one of the following properties must change as well. Which of the following will NOT change?

• the star's absolute magnitude

• the rate at which the star uses nuclear energy

• the distance from the star to Earth

• the rate at which the star releases electromagnetic energy

Tags

NGSS.HS-PS4-3

If a scientist sends light waves to four different objects in space, which of the following will take the longest to bounce the wave back to Earth? (which is the farthest away)

• a star in the Milky Way Galaxy

• a star in the Andromeda Galaxy

• a planet in Earth's Solar System

• a planet in another star system within the Milky Way Galaxy

Which of the following statements describes why scientists use the light-year unit to measure distances in space?

• A light-year unit is very small and distances in space are very small.

• A light-year unit is very small and distances in space are very large.

• A light-year unit is very large and distances in space are very small.

• A light-year unit is very large and distances in space are very large.

An astrophysicist is investigating the impact of solar flares on Earth's atmosphere. Which of the following is the best method to collect data on this phenomenon?

• Use a telescope to observe the surface of the Sun during a solar flare.

• Measure the levels of toxic gases in Earth's atmosphere during a solar eclipse.

• Develop a computer model which simulates how the Sun uses hydrogen during a solar flare.

• Launch a satellite to measure the radiation that reaches Earth's atmosphere during a solar flare.

Tags

NGSS.MS-ESS3-2

Dr. Kuiper is studying the electromagnetic radiation emitted by a star in the Andromeda Galaxy. He has detected three different wavelengths of electromagnetic energy from the star. Which of the following statements describes what Dr. Kuiper should see when he calculates the frequencies of these waves?

• The wave with the shortest wavelength will have the lowest frequency.

• The wave with the shortest wavelength will have the highest frequency.

• The wave with the longest wavelength will have a frequency that is double its amplitude.

• The wave with the longest wavelength will have a frequency that is one half its amplitude.

Tags

NGSS.HS-PS4-1

How do radio waves and visible light waves differ?

• Radio waves move faster than visible light waves.

• Radio waves have more energy than visible light waves.

• Radio waves have a lower frequency than visible light waves.

• Radio waves have a shorter wavelength than visible light waves.

Tags

NGSS.HS-PS4-1

If it takes 4 days to travel to the moon, how long would you expect it to take to travel to Mars?

• six hours

• six days

• six months

• six years

Tags

NGSS.MS-ESS1-3

Radio telescopes receive radio waves from distant objects. If radio waves travel through space at the speed of light (300 000 km/s), then how long do radio waves emitted by the Sun take to reach Mars?

• 12.5 min

• 10.0 min

• 8.3 min

• 5.5 min

Tags

NGSS.MS-ESS1-3

Sally is facing south on March 21 and is trying to find the coordinates of the Sun as it sets. Which of the following coordinates most likely describe the location of the Sun?

• Altitude 85° and azimuth 90°

• Altitude 5° and azimuth 270°

• Altitude 5° and azimuth 90°

• Altitude 85° and azimuth 270°

Tags

NGSS.MS-ESS1-1

Which of the following statements best compares telescopes based in space to telescopes based on Earth?

• Space-based telescopes are generally larger.

• Space-based telescopes capture clearer images.

• Earth-based telescopes, in general, cost more to build.

• Earth-based telescopes explore further into deep space.