8th grade final 2022

When a moving object is acted on by unbalanced forces, the object will

• stop moving.
• move in unpredictable patterns.
• move in the same direction as the stronger force.

Tags

NGSS.MS-PS2-2

"If I have seen further it is by standing on the shoulders of giants." This is an old quote, one that Isaac Newton used to describe his own scientific efforts. It was his way of saying that the advances he contributed to science were only possible because

• he had exceptional vision.
• of divine guidance from heaven above.
• of the scientists and ideas that came before him.
• of the extremely large individuals who lifted him up.

Tags

NGSS.MS-ETS1-1

This process of heat transfer is BEST described as

• condensation
• conduction
• convection
• radiation

Tags

NGSS.MS-ESS2-6

Which statement best describes what the picture above shows?

• It shows white light being transformed into energy as it passes through ice.
• It shows heat being transformed into a visible spectrum with the use of a mirror.
• It shows how a visible spectrum can be transformed into white light through glass.
• It shows white light passing through a prism and separating into a visible spectrum.

Which atom diagram models fluorine with 9 protons?

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Why does an increase in temperature result in an increase in reaction rate?

• An increase in temperature raises the activation energy which increases the reaction rate.
• An increase in temperature causes the molecules to increase in size which increases reaction rate.
• An increase in temperature decreases the concentration of reactants which increases reaction rate.
• An increase in temperature causes an increases the number of collisions which increases reaction rates.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Maria assembled pictures of the organisms seen here to represent a simple aquatic food chain. Evaluate Maria's model. What MUST Maria add to make this food chain model more accurate?

• Arrows to show the flow of energy.
• The sun and arrows to show the flow of energy.
• The sun, a producer, and arrows to show the flow of energy.
• Maria should color the organisms and then add arrows to show the flow of energy.

Tags

NGSS.MS-LS2-3

20g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on the scale. What is the mass of the solution ?

• 20g
• 80g
• 100g
• 120g

Tags

NGSS.MS-PS1-5

What type of microscope is used to show the fine detail of cell organelles, as well as the spindle fibers and chromosomes as seen during anaphase?

• compound light microscope
• binocular stereomicroscope
• transmission electron microscope

Tags

NGSS.HS-LS1-4

Based on the principles of convection, conduction and thermal radiation, which scenario below is most similar to the following situation? You put a heating pad on your back after exercising.

• Feeling a metal wire get warmer as you roast a marshmallow over a fire.
• Warm air rising in a room where the air is moving.
• The sun warming up the roof on a house.
• Cold water sinking in a pot of water being warmed up on the stove.