Midterm Practice #2

The chemical representation for baking soda plus vinegar (combination B) is NaHCO3 + CH3COOH.

For baking soda, there is one sodium (Na) atom, one hydrogen atom, one carbon atom, and three oxygen atoms.

For vinegar, there are four hydrogen atoms, two carbon atoms, and two oxygen atoms.

Which of the following could be the representation for the product after baking soda & vinegar are combined?

• H20 + NaC2H3O2

• CO2 + NaC2H3O2

• H2O +CO2+NaC2H3O2

• H2O+CO2+C2H3O2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-1

Which represent(s) a chemical reaction?

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which represent(s) a physical reaction?

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Below are models that show the 3 different phases of water from the teacher's demonstration. In which state are the molecules moving the fastest?

• liquid

• solid

• gas

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NGSS.MS-PS1-4

Which of the following statements are TRUE about states of matter & kinetic energy?

• Fewer particles means there is more kinetic energy

• As temperature increases so does kinetic energy

• As the number of particles decreases so does the kinetic energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

The Coriolis Effect is a result of the rotation of Earth. It has a direct impact on the directions of Earth's winds, as shown in the diagrams below. Northern hemisphere winds are deflected to the right, and Southern hemisphere winds are deflected to the left.

HOW DOES THE CORIOLIS EFFECT IMPACT THE EARTH'S CLIMATE?

• It allows hurricanes to form at the equator from the cycling of wind in different directions

• It keeps constant flow of energy throughout the planet so that all parts of the Earth have the same climate

• It affects ocean currents, which transport warm surface water, evening out the distribution of heat on Earth's surface.

• It makes the Northern Hemisphere windier than the Southern hemisphere, and the ocean current are stronger as well

Tags

NGSS.MS-ESS2-6

A Science class is studying climates in different parts of the U.S. They learned that Florida & Alaska have very different climates year round.

Which location, Florida or Alaska, gets more energy from the sun? Explain.

• Florida-areas closest to the equator get more energy from the sun.

• Florida-areas farthest to the equator get more energy from the sun.

• Alaska-areas farthest from the equator get more energy from the sun.

• Alaska-areas closest to the poles get more energy from the sun.

Tags

NGSS.MS-ESS2-6

You want to live in a city in Florida where the temperatures are relatively stable. Would you

choose a coastal city or one inland, one that is away from any water body? Explain.

• Inland - land gains and loses energy more slowly than the ocean.

• Coastal - the ocean gains and loses energy more slowly than the land.

• Inland - land gains energy faster, but loses it more slowly than the ocean.

• Coastal - the ocean gains and loses energy faster than land.

Tags

NGSS.MS-ESS2-6

How do currents off the coast of Florida & Alaska compare?

• Although they are both warm currents, the one off of Florida's coast has less energy.

• Although they are both cold currents, the one off of Alaska's coast has more energy.

• Although they are both cold currents, the one off of Alaska's coast has less energy.

• Although they are both warm currents, the one off of Florida's coast as more energy.

Tags

NGSS.MS-ESS2-6

If the amount of atmospheric carbon is increasing, then the amount of carbon in other stages of the carbon cycle must be __________.

(choices are increasing, decreasing, or constant) SPELLING COUNTS!

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5