Mid-Year Skills Check Review

Students want to create a homemade lava lamp and need to determine which liquids (vegetable oil & honey) would float or sink, based on their density, when combined with water. What could be a possible hypothesis for this experiment?

• I think that oil will sink and the water will float.

• If the water is hot, then the honey will float.

• If the water is cold, then the honey will sink.

• If the type of liquid is vegetable oil, then it will float above the water.

Students want to create a homemade lava lamp and need to determine which liquids (vegetable oil & honey) would float or sink, based on their density, when combined with water. What are the independent & dependent variables for this experiment?

• IV: temperature of the liquid, DV: density of the liquid

• IV: type of liquid, DV: density of the liquid

• IV: type of liquid, DV: time taken to mix the liquids

• IV: volume of liquid DV: height of liquid layers

Students want to create a homemade lava lamp and need to determine which liquids (vegetable oil & honey) would float or sink, based on their density, when combined with water. What would be 3 possible constants for this experiment?

• Volume of liquids used, temperature of the liquids, size of lava lamp container

• Volume of liquids, heat source, color of water

• Density of liquids, size of the lava lamp, temperature of the liquids

• Density of the water, color of water, heat source

Tags

NGSS.MS-PS1-2

Students want to create a homemade lava lamp and need to determine which liquids (vegetable oil & honey) would float or sink, based on their density, when combined with water. What type of graph would the students use to display their data best?

• Line Graph

• Pie graph

• Scatterplot

• Bar graph

Tags

NGSS.MS-PS1-2

The students only completed their lava lamp experiment one time. How can they be sure that their results are accurate?

• Complete the experiment again with different liquids

• Compare their data with other students in the classroom

• Go to Google and find the answer

• Complete the experiment again and use a heat source

A student wanted to determine the effects of the color of a cup on the temperature of the water inside. He left the cups exposed to a heat source for 5 minutes and measured the temperature after each minute elapsed. Below is the data he reported. Which variable pair is placed with the correct axis?

• A. X-axis: Temperature Y-axis: Time

• B. X-axis: Time Y-axis: Temperature

• C. X-axis: Color of Cup Y-axis: Temperature

• D. X-axis: Color of Cup Y-axis: Time

Tags

NGSS.MS-PS3-4

A student wanted to determine the effects of the color of a cup on the temperature of the water inside. He left the cups exposed to a heat source for 5 minutes and measured the temperature after each minute elapsed. Below is the data he reported:

• Black Cup

• White Cup

• No temperature difference

• They both increased the same amount.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Based on the periodic table, which element would be located at period 3, group 13?

• Neon

• Silicon

• Aluminum

• Chlorine

Tags

NGSS.MS-PS1-1

Based on the periodic table, which element is being described: - a semiconductor - shares properties with a metal and nonmetal - has a rounded atomic mass of 75 amu - contains 42 neutrons

• Arsenic, a metalloid

• Geranium, a metalloid

• Arsenic, a non-metal

• Molybdenum, a metal

Which is the correct pairing of elements to form that specific type of bond? - Ionic bond = metal + nonmetal - Covalent bond = nonmetal + nonmetal

• Nitrogen - Oxygen, Ionic Bond

• Sodium - Chlorine, Ionic Bond

• Potassium - Sulfur, Covalent Bond

• Tungsten - Nitrogen, Covalent Bond