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Your weight on the moon is about one-sixth of your weight on Earth. Why do you weigh less on the moon?

• The moon exerts a greater gravitational force because it is more dense than Earth

• The moon exerts a smaller gravitational force because it has less mass than Earth

• The moon exerts a greater gravitational force because it is closer to Earth than the sun

• The moon exerts a smaller gravitational force because objects are closer to its center than on Earth

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Vince’s mass on Earth is 79 kg and his weight on Earth is 174 pounds. If Vince was to travel to the moon, how would his mass and weight change?

• Vince’s mass would increase as well as his weight.

• Vince’s mass would decrease as well as his weight

• Vince’s mass would stay the same but his weight would increase

• Vince’s mass would stay the same but his weight would decrease

Your weight on Jupiter is about 2.5 times of your weight on Earth. Why do you weigh more on Jupiter?

• Jupiter exerts a greater gravitational force because it is more dense than Earth

• Jupiter exerts a smaller gravitational force because it has less mass than Earth

• Jupiter exerts a greater gravitational force because it is closer to Earth than the sun

• Jupiter exerts a smaller gravitational force because objects are closer to its center than on Earth

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NGSS.MS-PS2-4

Ashley wants to compare the solubility of three materials: salt, sand and flour. She fills three beakers with 500 mL of water each. She then adds the same amount of each solute to the three beakers below. Based on Ashley’s observations what statement can she make about the solubility of the three materials?

• Sand is the most soluble

• Flour is the most soluble

• Salt is the most soluble

• All are equally soluble

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NGSS.MS-PS1-2

1. Which statement best represents a gas? (SC.8.P.8.1.)

• Particles move more slowly and are farther apart.

• Particles move more slowly and are closer together.

• Particles move more quickly and are farther apart.

• Particles move more quickly and are closer together.

How does the picture relate to the particles in a solid?

• The cars are driving fast and switching lanes like the particles in a solid.

• The cars are sliding past each other while driving the speed limit like the particles in a solid.

• The cars are moving so fast you cannot even see them like the particles in a solid.

• The cars are barely moving like the particles in a solid.

1. When the process of condensation happens, what is happening with the molecules and the phase change? (SC.8.P.11.1)

• The molecules are speeding up turning a liquid into a gas.

• The molecules are slowing down turning a liquid into a gas.

• The molecules are speeding up turning a gas into a liquid.

• The molecules are slowing down turning a gas into a liquid.

Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column in the periodic table. Why are these elements in the same column in the periodic table? 

• They are the same size
• They react with each other
• They have similar properties
• They have the same number of protons

The images below represent the atoms in a substance as it changes state. Use these images to answer the questions that follow. Which term best describes the substance represented by Figure 1?

• compound 
• liquid
• solid
• element

Any atom that has 19 protons is a potassium (K) atom. Which statement best describes what would happen if a proton was added to potassium atom?

• The atom will lose electrons
• The atom would have a negative charge.
• The atom would no longer be potassium
• The atom would have a smaller atomic number.

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