12/7 Unit 1 Assessment

Which type of visible light has the highest energy?

• Red
• Yellow
• Green
• Violet

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-4

Use the image to identify the motion of the object relative to Earth.  Compare the absorption spectra of the star to what the star would look like if it were not moving at all relative to Earth.

• It is not moving relative to Earth
• It is moving away from Earth (Redshift)
• It is moving towards Earth (Blueshift)
• It is moving towards Earth (Redshift)

Tags

NGSS.HS-ESS1-2

NGSS.HS-PS4-3

An ambulance is travelling towards a hospital at a constant velocity of 30 m∙s-1.

The diagram above shows the wave fronts of the sound produced from the siren as a result of this motion.

At which side of the diagram, X or Y, is the hospital situated?

• X

• Y

When a siren is approaching you, how does the observed pitch of the siren compare to what you hear after it moves past you? (you many choose up to 5 correct answers)

• The siren sounds the same throughout

• The pitch is higher before it moves past

• The pitch gets lower and lower until it reaches me.

• The siren's pitch sounds lower after it moves past me.

• The pitch gets higher after it moves past me.

Four students are asked: Why are you able to observe the Doppler Effect with sound waves on Earth but not light waves?

Which student has the most accurate answer?

• Dave: Because light waves move so quickly, the Doppler Effect doesn't apply to them.

• Steve: The Doppler Effect only works on a limited range of frequencies.

• Jess: The Doppler Effect works on light waves, but it's moving too fast for us to observe the differences in frequencies.

• Jenn: The Doppler Effect is only detectable when the source or observer are moving toward or away from each other at a velocity that is a measurable fraction of the wave being emitted.

Which of the following correctly places these in order from LARGEST to SMALLEST?

• galaxy -- local group/cluster -- planet -- solar system -- universe

• universe -- local group/cluster -- galaxy -- solar system -- planet

• planet -- solar system -- galaxy -- local group/cluster -- universe

• universe -- galaxy -- solar system -- local group/cluster -- planet

Tags

NGSS.MS-ESS1-3

A rocky or metallic object that orbits the sun and is much smaller than a planet

• star

• asteroid

• moon

• planet

Tags

NGSS.MS-ESS1-3

A celestial body that consist primarily of ice and dust and often found in Oort belt

• asteroid

• moon

• galaxy

• comet

Which of the following is relevant to scientific inquiry?

• moral judgments

• personal opinions

• assumptions about nature

• none of the above

Assume that a scientist is measuring mass in an experiment. The balance she is using is not set at zero, so it always measures mass a little too high. What type of error does this cause in her data?

• random error

• observer error

• systematic error

• two of the above