A scientist hiking in a desert observes a cliff. The scientist makes a drawing of the layers of rock in the cliff and the types of fossils observed in the layers. Based on observations, the scientist determines layers 3 and 5 were formed from cooled lava. The scientist's drawing is shown above.

Identify the oldest layer in the rock cliff and explain your reasoning for the layer chosen.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

Explain how the environment has changed over time at this location. Include evidence in your explanation.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

A student makes a model of the solar system on a poster board. The student uses foam balls to represent objects in the solar system. The student's model is shown above.

Explain one error concerning the size of the foam balls in the model.

Tags

NGSS.MS-ESS1-3

Describe two possible changes to the environment most likely caused by the pattern shown in the average global air temperatures.

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Which of the following statements is most plausible regarding the theory of evolution?

• Evolution is a process that occurs overnight.

• All species have remained unchanged since their creation.

• Natural selection is a key mechanism of evolution.

• Evolution only affects animals, not plants.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

In a plausible scientific experiment, what is the role of a control group?

• To introduce new variables to the experiment.

• To serve as a standard for comparison against the experimental group.

• To ensure the experiment is biased.

• To randomly change the outcome of the experiment.

Tags

NGSS.MS-PS1-2

Which of the following is a plausible explanation for the phases of the moon?

• The moon changes shape as it orbits the Earth.

• The Earth's shadow causes the phases of the moon.

• The moon's phases are caused by its position relative to the Earth and Sun.

• The moon emits its own light, causing different phases.

Tags

NGSS.MS-ESS1-1

What is a plausible reason for the increase in global temperatures?

• The Earth's orbit has drastically changed.

• Increased levels of greenhouse gases in the atmosphere.

• The Sun has become significantly hotter.

• The Earth's core is cooling down.

Tags

NGSS.MS-ESS3-5

Which of the following is a plausible hypothesis for why plants grow towards light?

• Plants are attracted to the warmth of the light.

• Light provides energy for photosynthesis, which is essential for growth.

• Plants grow towards light to avoid predators.

• Light helps plants to sleep better.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

In a plausible scenario, what would happen if the Earth's magnetic field disappeared?

• The Earth would stop rotating.

• The atmosphere would be stripped away by solar winds.

• All electronic devices would cease to function.

• The Earth would become uninhabitable immediately.

Tags

NGSS.HS-ESS2-2