Final Exam Review

The size of the gravitational force between two objects depends on their ____.

• frictional forces

• inertia

• masses and distance between them

• speed and direction

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Which example describes a behavioral adaptation?

• A bird builds its nest in the ash near a volcano

• A whale has the ability to hold its breath for 20 minutes

• A fox’s hair is white in the winter and brown in the summer

• A. A monkey has long arms that allow it to swing from one branch to another

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An object that is falling freely has a constant what?

• speed

• velocity

• acceleration

• nothing is constant

All electromagnetic waves____________ .

• Have the same wavelength

• have the same frequency

• travel at 300,000,000 m/s in a vacuum

• have the same energy

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Which of the following describes the most likely application of electromagnetism in a power plant?

• Magnets detect the presence of electric currents in nature.

• Magnets convert electric energy into mechanical energy

• Moving a magnet in a coil of wire generates an electric current.

• Moving a magnet in a coil of wire produces visible light.

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The scientist who discovered that the Universe was expanding was……

• Bill Nye

• Edward Hubble

• Albert Einstein

• Alfred Wegener

When a galaxy is moving away from Earth, the wavelength of light it is giving off is…..

• stretched

• broken up

• squeezed together

• burnt out

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Where are the tectonic plates located?

• The crust

• The lithosphere

• The asthenosphere

• The mantle

What is the acceleration of the box in the picture?

• 7,500 m/s²

• 300 m/s²

• 25 m/s²

• 12 m/s²

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An indicator that orients you when describing motion is called the___________ .

• time

• speed

• reference point

• point of motion