Unit 1: Introduction to Physical Science Post Test

During photosynthesis, ______ energy is transformed into ______ energy.

• solar

• chemical

• mechanical

• thermal

• nuclear

Lyndon is investigating whether putting plastic on her windows will help seal out cold winter drafts. She covers a window on the south side of her house with plastic and measures the inside temperature near the window. She also measures the inside temperature near a window without plastic on the north side of her house. The windows are the same size and design. Why is this not an ideal controlled investigation?

• The windows should be different sizes to introduce variation.

• The drafts at each window may be different because the windows aren’t near each other.

• Temperature isn’t a good indicator of cold winter drafts.

• Outside temperature is a better indicator of cold winter drafts than inside temperature.

• The type of plastic used in the investigation isn’t mentioned.

Which energy conversion takes place when a solar cell is used to light a street lamp?

• solar energy → light energy

• solar energy → electric energy → light and heat energy

• solar energy → light and heat energy

• heat energy → light energy

• heat energy → light energy → electric energy

Select all the correct answers. Andrew walks through his garden and observes that the shapes of dewdrops are not always the same. Suppose he wants to investigate using the scientific method. Which questions are testable questions that he can ask to look into the reasons for the different shapes?

• Does the shape of the dewdrop depend on the temperature of the surface?

• Which dewdrop seems to have the most unusual shape?

• Is the material of the surface responsible for the shape of the dewdrop?

• Which shape of dewdrop is the most pleasing to the observer?

• Does the shape of the dewdrop depend on the moisture in the atmosphere?

If the root micro- means "small," which word means "a small, representative world"?

• A. microscopy

• B. microcosm

• C. microhabitat

If the root proto- means "early or first," which word means "the study of culture prior to its earliest recording"?

• A. protohistory

• B. prototype

• C. protoplasm

If the root geo- means "of the earth," which word means "pertaining to the internal heat of the earth"?

• A. geotaxis

• B. geotropic

• C. geothermal

If the root hydro- means "water," which word means "an electrical instrument used to monitor underwater sounds"?

• A. hydrometer

• B. hydrophone

• C. hydroplane

If the root word cirro- means "high," which word means "a high-altitude cloud made up of smaller clouds"?

• cirrostratus

• cirrocumulus

• cirrus

If the root bio- means "life," which does biome mean?

• a community of living organisms

• a breathing animal

• a live specimen