The student wants to investigate how sound waves from the straw horn interact with different materials. Which wave property should be tested, and which method should be used to test it?

• Wave property: absorption Method: playing the straw horn in a room with hard surfaces and a room with soft surfaces

• Wave property: absorption Method: making several sounds from straws of different lengths

• Wave property: pitch Method: playing the straw horn in a room with hard surfaces and a room with soft surfaces

• Wave property: pitch Method: making several sounds from straws of different lengths

Tags

NGSS.MS-PS4-2

Which statement best describes the relationship of these organisms?

• The structures are analogous; the organisms have a common ancestor..

• The structures are homologous; the organisms have a common ancestor.

• The structures are analogous; the organisms do not have a common ancestor.

• The structures are homologous; the organisms do not have a common ancestor.

A student is studying a diagram of a tectonic plate boundary.

Pick 2 words to best describe the movement of the tectonic plates in the diagram.

The tectonic plates move across Earth’s surface due to ( convection / conduction / radiation ) from materials in Earth’s ( core / mantle ) layer.

• conduction

• radiation

• convection

• mantle

• Core

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Students are studying fossilized animals from the bottom of an ancient lake. The students make drawings of the fossilized animals. One student claims that the fossilized animals are related to living animals. Which statement best supports the student’s claim?

• The fossilized animals have body sizes that are similar to the body sizes of living animals.

• The fossilized animals are made of rocky materials that are similar to those in the bones of living animals.

• The fossilized animals have body shapes and parts that are similar to the body shapes and parts of living animals.

• The fossilized animals show signs of having once lived in habitats that are similar to the habitats of living animals.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Planaria are flatworms that reproduce asexually. Catfish reproduce sexually. Which statement best compares planaria and catfish?

• Planaria have offspring that are genetically different, and catfish have offspring that are identical.

• Planaria require less time to produce offspring, and catfish require more time to produce offspring.

• Planaria produce offspring one at a time, and catfish produce large numbers of offspring at one time.

• D. Planaria require large amounts of energy to produce offspring and catfish require little energy to produce offspring.

Tags

NGSS.MS-LS3-2

The Cretaceous-Tertiary (K-Pg) event occurred about 65.5 million years ago. The causes are not completely known, but over fifty percent of all plants and animals went extinct. Evidence shows that Earth experienced a massive heat event that triggered fires, volcanic eruptions, and earthquakes. These activities released large amounts of debris into the air. The debris blocked the sunlight and caused Earth’s surface temperature to become much cooler.Which type of organisms would have most likely survived this event?

• Organisms that were able to eat only plants on land survived over time.

• Organisms that were able to grow very large on land survived over time

• Organisms that were able to use sunlight to heat their bodies survived over time.

• Organisms that were able to hide and to store energy to keep warm survived over time.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

NGSS.MS-LS4-1

NGSS.MS-LS4-4

Arctic hares are adapted to live in cold environments such as the Arctic. Scientific studies indicate that human activities contribute to a rise in the average global air temperature, resulting in a decrease in Arctic snow cover. Which statement explains how the changing arctic environment will most likely affect the population of arctic hares in winter

• The population will increase because environmental factors will increase the availability of food for hares.

• The population will increase because genetic factors will increase the number of hares that survive and reproduce.

• The population will decrease because environmental factors will reduce the ability of hares to hide from predators

• The population will decrease because genetic factors will reduce the ability of hares to survive in a warmer environment.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

A student observes the map showing the tornadoes that were reported in April of 2019. Which impact would the student most likely observe in locations with reported tornadoes?

• increased soil loss and desertification

• increased damage to buildings, structures, and trees

• decreased access to water storage and water bodies

• decreased amount of dry land near rivers and streams

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS3-2

Major volcanic eruptions are examples of extreme events that leave behind the remains of living organisms that may form into rock layers. Scientists can use these rock layers to determine which organisms were alive at different times on Earth. Which statement describes the most likely location of a rock layer containing fossils of organisms living immediately before an extreme event occurred?

• All the rock layers near the volcanic eruption layer will contain fossils of organisms living immediately before the eruption occurred

• All the rock layers beneath the volcanic eruption layer will contain fossils of organisms living immediately before the eruption occurred.

• The rock layer directly above the volcanic eruption layer will contain fossils of organisms living immediately before the eruption occurred.

• The rock layer directly beneath the volcanic eruption layer will contain fossils of organisms living immediately before the eruption occurred.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

A light source sends light waves through a small opening in a piece of paper to a screen. Pick 2 answers to complete the statement. The light waves will be diffracted by the opening in the paper, causing the light waves to (cancel out/ come together /spread out) and appear ( brighter / dimmer )

• cancel out

• come together

• spread out

• brighter

• dimmer

Tags

NGSS.MS-PS4-2