Eight Point Five

What do fuels combine with to produce heat and light?

• Carbon dioxide

• Carbon monoxide

• Hydrogen

• Oxygen

Tags

NGSS.MS-PS1-5

William takes his dog outside every night at different times. He notices that the constellations do not always appear to be in the same place. They may be in different places, or not appear in the sky at all. Which of the following explains the changes in the night sky William will likely see over the course of a night compared to the course of a year?

• The constellations in the sky rise and set over the course of a night because Earth rotates once every 24 hours. This is the same reason they change position during the year.

• The constellations in the sky rise and set over the course of a year because Earth revolves around the sun. This is the same reason they change position during the year.

• The constellations in the sky rise and set over the course of a night because Earth revolves around the sun. They change position during the year because Earth rotates once every 24 hours.

• The constellations in the sky rise and set over the course of a night because Earth rotates once every 24 hours. They change position during the year because Earth revolves around the sun.

Markius observes the constellation Orion. He first observes it at 8 P.M. and then later at 12 A.M. He notices that it is in a different place in the sky after four hours. What claim and evidence explain why Orion appears to be in different places in the sky at different times?

• Earth’s orbit around the sun causes Orion to disappear over the horizon

• Earth’s orbit toward Orion causes the constellation to appear to change size.

• Earth’s rotation moves Orion vertically so that its location in the sky changes.

• Earth’s rotation causes Orion’s stars to move in an arc, tilting the constellation.

Tags

NGSS.MS-ESS1-1

While looking for a picture of Polaris, Levi comes across this photo. The picture is a form of photography called long-exposure. He wonders why some stars appear as curved streaks while others appear to remain in place. Which of the following explains the phenomena shown in the photo?

• The photographer took a long-exposure photo that shows how the position of stars change as seasons change.

• The photographer took a long-exposure photo that shows how stars rotate around Earth over the course of a month.

• The photographer took a long-exposure photo that shows how stars apparently curve in an arc as Earth rotates over 24 hours.

• The photographer took a long-exposure photo that shows how stars appear to move as Earth revolves around the sun over 24 hours.

Tags

NGSS.MS-PS2-4

Samantha is stargazing with her telescope. She spots a star she has never seen before and gets really excited. She looks it up on her star map and finds that it is located in a group of stars called M97. Her best friend, Allye, also has a telescope. So Samantha calls Allye and asks her to take a look. However, Allye does not have a star map. How can Samantha use her map (shown below) to describe to Allye the location of M97?

• Samantha can tell Allye to look between the border of Ursa Major and Ursa Minor.

• Samantha can tell Allye to look in the cluster of stars near M 63, M94, and M106.

• Samantha can tell Allye to look in the area of Ursa Minor above the Li le Dipper

• Samantha can tell Allye to look in the area of Ursa Major slightly below the Big Dipper.

Read about the investigation. Answer the questions by choosing the letter next to the best answer. Your class is learning about constellations in the night sky. So, your teacher helps you track the visibility of the constellations throughout the school year. Your class observes five different constellations. Constellations that are visible are marked with a “Y”. Constellations that are not visible are marked with an “N”. As your class gathers data, you also look for patterns. The data is shown in the table below. Based on the data in the table, which constellations are visible during at least one summer month?

• lConstellation 1, Constellation 2

• Constellation 2, Constellation 5

• Constellation 1, Constellation 2, and Constellation 3

• Constellation 1, Constellation 2, Constellation 4 and Constellation 5.

Tags

NGSS.MS-ESS1-1

Based on the data, Constellation 5 appears to be visible in the sky during all times of the year. What is the most likely explanation for its constant appearance?

• Constellation 5 is lower in the night sky than all the other constellations.

• Constellation 5 is likely visible from all points on Earth during all seasons.

• Constellation 5 is likely closer to Polaris and therefore visible during all seasons.

• Constellation 5 is likely farther from Polaris and therefore visible during all seasons.

Tags

NGSS.MS-ESS1-1

Because of Earth’s rotation, stars in the night sky seem to

• vibrate in place

• move in an arc

• disappear

• grow bigger through the night

What is the pH value of a neutral solution at 25°C?

• A) 7.0

• B) 8.5

• C) 6.5

• D) 9.0

Which of the following pH values indicates a basic solution?

• A) 5.5

• B) 7.0

• C) 8.5

• D) 6.0