CAST

The diagram shows a cross section of layers of sedimentary rocks. The types of fossils in each layer are shown.

Based on the information in the cross section, select the three statements that are most likely correct.

• Layer C is below Layer B, so Layer C is older.

• Layer A is at the top, so it is the youngest layer.

• The ammonite fossil is above the crinoid fossil, so the crinoid is older.

• There is no coral fossil in Layer D, so corals must have become extinct.

• The gastropod fossils are above the crinoid fossil, so gastropod evolved from crinoids.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

According to this graph, which is the most popular skittle?

Before riding the roller coaster, students are asked to look at a diagram of the track and evaluate the relative potential energy at four points on the roller coaster. The four points, along with their height in meters (m), are shown on the diagram.

Which two statements correctly describe the relative potential energy at various points on the track?

• At (1) the potential energy is greater than the potential energy at (3)

• At (2) the potential energy is greater than the potential energy at (3)

• At (3) the potential energy is greater than the potential energy at (4)

• At (4) the potential energy is greater than the potential energy at (2)

Tags

NGSS.MS-PS3-2

Which type of graph shows change over time?

• bar graph

• line graph

• circle graph

• Scatter Plot

Tags

NGSS.MS-PS3-1

A biologists wanted to study how certain plant structures, such as colored flowers, might affect how often the plants are pollinated during the day. For one hour on a sunny summer day, the biologists observed bee, butterfly, hummingbird and beetle pollinators of a population of plants with equal numbers of purple, white, and pink flowers. Based on the data collected and shown in the table, the biologists made the claim that plants with purple flowers in this population attract more pollinators than do plants with flowers of other colors.

Which evidence could be used to challenge the biologist's claim that purple flowers in the population of plants attract more pollinators than other flower colors do?

• The purple flowers did not have any butterfly or beetle population.

• Bees pollinated the purple flowers 12 times and the white flowers only 1 time.

• Hummingbirds pollinated the purple flowers 5 times and did not pollinate the white or pink flowers.

• The purple flowers were pollinated 17 times, the white flowers were pollinated 3 times, and the pink flowers were pollinated 2 times.

Tags

NGSS.MS-LS1-4

NGSS.MS-LS2-1

There are two schools in a town where earthquakes sometimes happen. The town leaders want to make the school buildings stronger and safer to protect students and teachers during an earthquake. The leaders ask three different construction companies to propose a plan for making the schools safer. Each plan should match three important criteria and constraints.

1. The schools will be made safe within two years.
2. The cost cannot be more than $0.47 per square meter of building space.
3. Both schools will be able to withstand an earthquake of magnitude 8.0

The table shows important details for three plans submitted by the construction companies. Select the plan that best matches the criteria and constraints made by the town leaders.

• Plan 1

• Plan 2

• Plan 3

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

A student reviews the model shown and says that, based on the model, a solar eclipse should happen every time there is a new moon. However, solar eclipses occur less often than New Moons. Which feature of the model should be revised to best explain why solar eclipses do not happen every month?

• The model should show that the shape of the Earth's orbit around the Sun is an ellipse.

• The model should show that the shape of the Moon's orbit around the Earth is an ellipse.

• The model should show that Earth's equator is inclined relative to the plane of Earth's orbit around the Sun.

• The model should show that the plane of the Moon's orbit around the Earth is inclined relative to the plane of Earth's orbit around the Sun.

Tags

NGSS.MS-ESS1-1

Which model shows a balanced chemical reaction?

• 
• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of graph is this?

• Bar graph

• Histogram

• Pie Chart

• Line graph

The living components or factors that affect an ecosystem or other organisms living in that ecosystem.

• Abiotic Factor

• Biotic Factor

• Ecosystem

• Food Web

Tags

NGSS.MS-LS2-4