Edgenuity Science Unit 3 Test Review

Allison drew a diagram to illustrate radiation.

Which labels should replace the X and Y?

• X: Matter

  Y: Empty space

• X: Large mass

  Y: Small mass

• X: Hot

  Y: Cold

• X: Earth

  Y: Sun

Which diagram best illustrates what happens when electromagnetic waves strike a reflective material?

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Which is the correct order of materials in terms of reflectivity, from least to greatest?

• brown soil, beige sand, white paper, black asphalt

• white paper, beige sand, brown soil, black asphalt

• black asphalt, brown soil, beige sand, white paper

• beige sand, white paper, black asphalt, brown soil

Which is an example of radiation?

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Which occurs when a warm fluid cools down?

• Energy is released to the environment.

• Energy is absorbed from the environment.

• The density of the fluid decreas

• The mass of the fluid decreases.

Four students are carrying out different laboratory procedures.

Piroja is mixing baking soda and vinegar to see if it reacts.

Jason is heating salt water over a burner until the water evaporates.

Kali is putting crushed ice and ice cubes on a table to see which melts first.

Francisco is separating iron filings from sand using a magnet.

Which experiment relies on convection?

• Piroja’s experiment

• Jason’s experiment

• Kali’s experiment

• Francisco’s experiment

Jin listed some common thermal insulators and conductors in a chart.

Which belongs in the area marked with an X?

• iron

• foam

• wood

• glass

Which statement best describes heat and thermal energy?

• They are different words for the same thing.

• They represent different concepts.

• Heat is what happens when thermal energy stops moving between substances.

• Thermal energy is what happens when heat moves between substances.

Which of these actions would increase heat transfer between two objects?

• establishing their thermal equilibrium

• increasing the area of their contact

• using objects with similar specific heats

• reducing the time of their contact

What causes the air above a pot of boiling water to become warm?

• The air transfers thermal energy to the water vapor.

• The water vapor transfers thermal energy to the air.

• The particles in the air lose kinetic energy.

• The particles in the water vapor gain kinetic energy.