What is your IDATA teacher's name?

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* 1. What is your IDATA teacher's name?

What is your Skynet Junior Scholars (SJS) Login or User name?

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* 2. What is your Skynet Junior Scholars (SJS) Login or User name?

Approximately how many Moons would fit between the Earth and the Moon?

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* 3. Approximately how many Moons would fit between the Earth and the Moon?

Which of the following rankings is correct for the size (width) of the following objects from smallest to largest?

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* 4. Which of the following rankings is correct for the size (width) of the following objects from smallest to largest?

The Sun is about how many times farther away from the Earth than the Moon is from the Earth?

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* 5. The Sun is about how many times farther away from the Earth than the Moon is from the Earth?

Alpha Centauri A is the closest star to the sun. How would the brightness of Alpha Centauri A change if observed from Earth and then from Pluto?

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* 6. Alpha Centauri A is the closest star to the sun. How would the brightness of Alpha Centauri A change if observed from Earth and then from Pluto?

(Complete the sentence.) From the northern hemisphere on Earth, stars in the night sky, on any given night....

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* 7. (Complete the sentence.) From the northern hemisphere on Earth, stars in the night sky, on any given night....

(Complete the sentence.) From the southern hemisphere on Earth, stars in the night sky, on any given night....

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* 8. (Complete the sentence.) From the southern hemisphere on Earth, stars in the night sky, on any given night....

(Complete the sentence.) From the northern hemisphere on Earth, asteroids in the night sky, on any given night....

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* 9. (Complete the sentence.) From the northern hemisphere on Earth, asteroids in the night sky, on any given night....

Standing on the Earth’s equator, a star directly overhead would appear to move across the night sky at a rate of about how many degrees per hour? (Please select the best response.)

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* 10. Standing on the Earth’s equator, a star directly overhead would appear to move across the night sky at a rate of about how many degrees per hour? (Please select the best response.)

Standing on the Earth’s equator, an asteroid located in the Asteroid Belt that appears directly overhead would appear to move across the night sky at a rate of about how many degrees per hour? (Please select the best response)

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* 11. Standing on the Earth’s equator, an asteroid located in the Asteroid Belt that appears directly overhead would appear to move across the night sky at a rate of about how many degrees per hour? (Please select the best response)

Which of the following is not a form of light?

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* 12. Which of the following is not a form of light?

Which of the following travels slowest through space?

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* 13. Which of the following travels slowest through space?

Which of the following has the shortest wavelength?

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* 14. Which of the following has the shortest wavelength?

Consider the 3 stars described below.
  • Star X gives off most of its energy at a wavelength of 400 nanometers. 
  • Star Y gives off most of its energy at a wavelength of 800 nanometers. 
  • Star Z gives off most of its energy at a wavelength of 600 nanometers. 
Which star is the coolest?

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* 15. Consider the 3 stars described below.
  • Star X gives off most of its energy at a wavelength of 400 nanometers. 
  • Star Y gives off most of its energy at a wavelength of 800 nanometers. 
  • Star Z gives off most of its energy at a wavelength of 600 nanometers. 
Which star is the coolest?

A photon of which color of light carries the most energy?

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* 16. A photon of which color of light carries the most energy?

The following diagram represents three electromagnetic waves emitted simultaneously by the Sun. Use this diagram to answer the next 2 questions. 

The picture shows three wave forms. All three cover the same distance across the screen. Wave 1 shows a single wave cycle (1 peak and 1 trough) in that distance and is about 1 inch high. Wave 2 shows two wave cycles (2 peaks and 2 troughs) in that distance and is about 2 inches high. Wave 3 shows four wave cycles (4 peaks and 4 troughs) in that distance and is about half and inch high.

The picture shows three wave forms. All three cover the same distance across the screen. Wave 1 shows a single wave cycle (1 peak and 1 trough) in that distance and is about 1 inch high. Wave 2 shows two wave cycles (2 peaks and 2 troughs) in that distance and is about 2 inches high. Wave 3 shows four wave cycles (4 peaks and 4 troughs) in that distance and is about half and inch high.
Which wave represents electromagnetic radiation with the highest energy?

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* 17. Which wave represents electromagnetic radiation with the highest energy?

Which wave will arrive first at a satellite orbiting just above the Earth’s atmosphere?

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* 18. Which wave will arrive first at a satellite orbiting just above the Earth’s atmosphere?

The coolest stars emit most of their energy in which portion of the electromagnetic spectrum?

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* 19. The coolest stars emit most of their energy in which portion of the electromagnetic spectrum?

Asteroids emit most of their energy in which portion of the electromagnetic spectrum?

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* 20. Asteroids emit most of their energy in which portion of the electromagnetic spectrum?

(Select the best response to complete the sentence.) The majority of an asteroid is composed of....

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* 21. (Select the best response to complete the sentence.) The majority of an asteroid is composed of....

You are investigating a comet and an asteroid, and you determine they are identical in mass, and are traveling at the same speed, which object would release more energy upon impact with planet Earth?

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* 22. You are investigating a comet and an asteroid, and you determine they are identical in mass, and are traveling at the same speed, which object would release more energy upon impact with planet Earth?

The star Moto has an apparent magnitude of +1.0 and an absolute magnitude of +3.0. If it were moved 10 times farther from Earth as compared to where it is now, which one of the following would occur?

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* 23. The star Moto has an apparent magnitude of +1.0 and an absolute magnitude of +3.0. If it were moved 10 times farther from Earth as compared to where it is now, which one of the following would occur?

(Complete the sentence.) The main asteroid belt is located between the orbits of....

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* 24. (Complete the sentence.) The main asteroid belt is located between the orbits of....

(Complete the sentence.) A rocky leftover planetesimal orbiting the Sun is....

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* 25. (Complete the sentence.) A rocky leftover planetesimal orbiting the Sun is....

Why isn't there a planet where the asteroid belt is located?

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* 26. Why isn't there a planet where the asteroid belt is located?

What is a meteor?

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* 27. What is a meteor?

(Complete the sentence.) A change in an asteroid’s apparent brightness over time is normally caused by....

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* 28. (Complete the sentence.) A change in an asteroid’s apparent brightness over time is normally caused by....

(Complete the sentence.) The position in the orbit of an asteroid when it is farthest from the sun is called....

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* 29. (Complete the sentence.) The position in the orbit of an asteroid when it is farthest from the sun is called....

Some telescopes are placed in space above Earth’s atmosphere primarily for which of the following reasons?

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* 30. Some telescopes are placed in space above Earth’s atmosphere primarily for which of the following reasons?

(Complete the sentence.) The aperture of a telescope refers to....

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* 31. (Complete the sentence.) The aperture of a telescope refers to....

Telescope A is 0.5 meter in diameter, and telescope B is 1.0 meter in diameter. All other things being equal, which of the following statements is true?

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* 32. Telescope A is 0.5 meter in diameter, and telescope B is 1.0 meter in diameter. All other things being equal, which of the following statements is true?

What is the difference between a refracting telescope and a reflecting telescope?

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* 33. What is the difference between a refracting telescope and a reflecting telescope?

How are computers used in astronomy today? Please describe as many different ways as you can think of.

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* 34. How are computers used in astronomy today? Please describe as many different ways as you can think of.

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