1. The Hertzsprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.stars would be *
3 points
Captionless Image
A Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
B Barnard’s Star is less bright than the sun, has a surface temperature above 3,800K, and is red.
C Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
D Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.
2. The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way? *
3 points
A Earth is a part of this galaxy.
B Many more stars exist outside the galaxy.
C The stars in the center of the galaxy are extremely small.
D The center of the galaxy consists of a dense cluster of stars.
3. A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.Why do other stars look much dimmer than the sun? *
3 points
A The sun appears yellow, which is more visible than other colors.
B The sun is much closer to Earth than other stars are.
C Other stars are made up of different gases than the sun is.
D As light from other stars travels through space, it gets reflected.
4. The sun is a mid-sized, main sequence star. What stage is next in the life cycle of the sun? *
3 points
A red giant
B black hole
C white dwarf
D neutron star
5. In November 2013 an object orbiting the sun seemed to disappear behind the sun. When a satellite did not detect the object, astronomers thought that the object had been destroyed when it passed close to the sun. However, when another satellite detected a small, bright object with a fan-shaped tail, astronomers proposed that the object was not destroyed.What type of object were astronomers most likely observing? *
3 points
A A comet
B An asteroid
C A meteor
D A nebula
6. The universe has many different components. Which list places four components of the universe in the most likely order from smallest to largest? *
3 points
A Planets, stars, galaxies, nebulae
B Nebulae, stars, planets, galaxies
C Galaxies, stars, planets, nebulae
D Planets, stars, nebulae, galaxies
7. The model shows the star Wolf 359, the sun, and Star X. It takes 7.8 years for light produced on Wolf 359 to reach the sun. *
3 points
Captionless Image
8 light years
39 light years
390 light years
359 light years
8. Which of these correctly compares the masses of different objects in the universe? *
3 points
A A moon has less mass than a star and more mass than the planet it orbits.
B A planet has less mass than a galaxy and more mass than the star it orbits.
C A galaxy has less mass than a moon and more mass than a planet.
D A star has less mass than a galaxy and more mass than a planet.
9. Darnel wants to list types of radiation based on their ability to penetrate human skin.Which list shows the order of radiation types from lowest to highest penetration? *
3 points
A Infrared radiation, microwaves, radio waves, visible light, x-rays, gamma rays, UV rays
B X-rays, gamma rays, infrared radiation, mi- crowaves, radio waves, UV rays, visible light
C Visible light, infrared radiation, UV rays, microwaves, radio waves, x-rays, gamma rays
D Radio waves, microwaves, infrared radiation, visible light, UV rays, x-rays, gamma rays
10. Ella is learning about different types of electro- magnetic radiation. She makes the following list about one frequency of radiation:· Can damage cells of living things · Blocked by Earth’s ozone layerWhich type of radiation does Ella’s list describe? *
3 points
A Infrared
B Microwave
C Ultraviolet
D Visible
11. To find the volume of a few small marbles, a student will need which of the following scientific tools? *
3 points
A a balance and a centimeter ruler 3.0
B a spring scale and a calculator
C a graduated cylinder and water
D a microscope and a micron ruler
12. A student includes the following sentence in a write-up of their investigation: The lead ball has a measured mass of 113 grams. Which kind of scientific statement is this sentence? *
3 points
A inference
B prediction
C conclusion
D observation
13. Some students measure the mass of a small pile of leaves before and after the leaves decompose. Each time the students measure the mass, they place a container with the decomposing leaves on a balance. Before recording the mass of the leaves, the students must do which of the following? *
3 points
A Subtract the mass of the container
B Add leaves from other plants to the container
C Allow the leaves to settle in the container for a few days
D Use a metric ruler to measure the volume of the container
where r your answers?
1. The correct answer is A. Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
2. The correct answer is A. Earth is a part of this galaxy.
3. The correct answer is B. The sun is much closer to Earth than other stars are.
4. The correct answer is A. red giant
5. The correct answer is A. A comet
6. The correct answer is C. Galaxies, stars, planets, nebulae
7. The correct answer is D. 359 light years
8. The correct answer is D. A star has less mass than a galaxy and more mass than a planet.
9. The correct answer is A. Infrared radiation, microwaves, radio waves, visible light, x-rays, gamma rays, UV rays
10. The correct answer is C. Ultraviolet
11. The correct answer is C. a graduated cylinder and water
12. The correct answer is D. observation
13. The correct answer is A. Subtract the mass of the container