Unit 12

A student is making a model of the sun's interior. Which feature should the student represent in the convection zone?

• gas erupting into space

• gases rising and sinking

• radiation moving outward

• nuclear fusion producing energy

Using the H-R diagram, astronomers classify stars using which two star properties

• color and composition

• size and surface temperature

• surface temperature and absolute brightness

• surface temperature and apparent brightness

In what kind of star system does one star sometimes block the light from another?

• open cluster

• globular cluster

• quasar system

• eclipsing binary

Which of the following is the best example of kinetic energy?

• an avalanche flow

• a bundle of firewood

• a case of dynamite

• a compressed spring

Tags

NGSS.MS-PS3-1

In a closed system, the total amount of energy remains the same.

• True

• False

Tags

NGSS.MS-PS3-5

How much gravitational potential energy does an 80.0 kg skydiver have if he is about to jump out of an airplane 3850 m above the ground? Answer should be in kJ.

Tags

NGSS.HS-PS3-2

What is the primary function of the mitochondria in a cell?

• Energy production

• Protein synthesis

• DNA replication

• Photosynthesis

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7

Which of the following best describes the process of photosynthesis?

• Conversion of glucose into energy

• Conversion of light energy into chemical energy

• Conversion of oxygen into carbon dioxide

• Conversion of chemical energy into light energy

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In an experiment, a student measures the temperature of a substance as it changes state from solid to liquid. What is this process called?

• Sublimation

• Condensation

• Melting

• Freezing

Tags

NGSS.MS-PS1-4

Which of the following elements is a noble gas?

• Oxygen

• Nitrogen

• Helium

• Hydrogen