8th Science TN Ready Practice 3

Golden rice is a variety of rice that has been genetically modified to produce beta-carotene, which is an essential nutrient. Which is the most likely reason for the development of golden rice?

• Golden rice will be more visible for harvesting, reducing the amount of time farmworkers spend in the fields.

• Golden rice will improve the diets of people in communities that consume rice as a major food source.

• Golden rice will grow faster and be resistant to disease, allowing rice to be grown in different climates.

• Golden rice will be more profitable for farmers growing and selling rice, allowing the farmers to plant less rice overall.

The model shows a wave hitting an object. Which figure completes the diagram, modeling only transmission?

• Option A

• Option B

• Option C

• Option D

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The model shows two objects, X and Y, in space. X revolves around Y, and both spin on their own axes.

• the unequal sizes of X and Y

• the similar circular shape of X and Y

• the force of gravity between X and Y

• the rotation speeds of X and Y

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The diagram shows two seismic stations, X and Y, and the epicenter of an earthquake. Only one of the seismic stations records S-waves from the earthquake. A student uses information from the seismic stations to create a model of Earth’s interior. Clay is used to represent solid layers, and corn syrup is used for liquid layers. Which seismic station detected S-waves, and how did the seismic information allow the student to create the model of Earth’s interior?

• Seismic station X detected S-waves and shows the presence of a solid inner core, where S-waves can travel.

• Seismic station Y detected S-waves and shows the presence of a solid inner core, where S-waves can travel.

• Seismic station X detected S-waves and shows that the outer core must be liquid as S-waves only travel through solids.

• Seismic station Y detected S-waves and shows that the outer core must be liquid as S-waves only travel through solids.

Which question were the students investigating in Experiment 1?

• How does changing the voltage affect the number of pins picked up by the electromagnet?

• How does changing the number of loops affect the number of pins picked up by the electromagnet?

• How does changing the number of loops affect the voltage of the electromagnet?

• How does changing the number pins affect the voltage of the electromagnet?

Tags

NGSS.MS-PS3-5

The students decide to create an electromagnet based on their results from Experiments 1 and 2. Which two designs pair the electromagnet with expected results?

• An electromagnet with 10 loops attached to a 0.7 V power source will pick up about 30 pins.

• An electromagnet with 30 loops attached to a 3.0 V power source will pick up about 75 pins.

• An electromagnet with 40 loops attached to a 3.0 V power source will pick up only 15 pins.

• An electromagnet with 20 loops attached to a 0.7 V power source will pick up about 15 pins.

• An electromagnet with 30 loops attached to a 1.5 V power source will pick up only 25 pins.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Which table best predicts the results observed on the force meter in Experiment 3?

• Table A:

  Distance 30 mm, Amount of Force small; and

  Distance 50 mm, Amount of Force large

• Table B:

  Distance 30 mm, Amount of Force large;

  and

  Distance 50 mm, Amount of Force small

• Table C:

  Distance 30 mm, Amount of Force small;

  and

  Distance 50 mm, Amount of Force small

• Table D:

  Distance 30 mm, Amount of Force large;

  and

  Distance 50 mm, Amount of Force large

Tags

NGSS.MS-PS2-5

Students make predictions about the magnetic field of the new electromagnet in Experiment 4. Which prediction correctly states how replacing the core will change the magnetic field in the new electromagnet compared to the original?

• The size of the magnetic field will increase, causing the voltage running through the wire to decrease.

• The size of the magnetic field will decrease, causing the new electromagnet to pick up fewer pins.

• The strength of the magnetic field will decrease, causing the voltage running through the wire to increase.

• The strength of the magnetic field will increase, causing the new electromagnet to pick up more pins.

Tags

NGSS.MS-PS2-3

Using the design of Experiment 3, at which distance apart will a force meter record the largest force between the two electromagnets?

• 50 cm

• 40 cm

• 35 cm

• 30 cm

Tags

NGSS.MS-PS2-5

The table shows two types of communication systems that are used to transfer information to different locations on Earth. Which statement explains how a satellite and a fiber optic cable transmit information?

• The satellite uses a receiver to transfer information, and the fiber optic cable does not require a receiver to transfer information.

• The satellite can store information as waves, and the fiber optic cable cannot store information.

• The satellite and fiber optic cable both use waves to transmit information.

• The satellite and fiber optic cable both use wires to transmit information.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2