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Review topics

Defnine:

Independent Variable

Dependent Variable

Hypothesis

Centi, Milli, Kilo prefixes

Terrestrial Planet

Planetesimals

Accretion

Seasonal Change Causes

Solar Nebula Big Bang Theory

Describe the ladder method of converting in the metric system and provide an example of how it is used.

You are interested in how height affects the speed of a falling marble. Which is your independent variable

A) The height at which you drop the marble

B) The color of the marble

C) The amount of time it to hit the ground

D) The weight of an object

The density of an object is 1.4 g/cm 3 . This means what?

A) The distance covered by an object is 1.4 cm per gram

B) The distance can be used to calculate a speed of 1.4 cm per gram

C) The mass that makes up an object will be 1.4

3 times larger than its size

D) The mass that makes up an object in a cm 3 is 1.4 grams

How is 4,500,000,000,000 written in scientific notation

A) 5 x 10 12

B) 45x10 12

C) 4.5 x 10 12

D) 4.5

9 x 10

How many centimeters are in a meter?

A) 10

B) 20

C) 100

D) 1000

Which of the following statements is a hypothesis?

A) The temperature in space is -427° F

B) If I turn on the lights we can expect to see

C) When I turn on the lights the room gets dark

D) If I turn on the faucet then the flow of water will increase because the valve is opened

The formation of the solar system from a huge cloud of dust and gases is called the ____.

A) solar theory

B) protoplanet theory

C) planetesimal theory

D) nebular theory

The Universe’s formation is eplained in a theory known as __.

A) Spontaneous Generation Theory

B) The Big Bang Theory

C) The Plate Tectonics Theory

D) The Theory of Relativity

Evidence suggests that Earth is about 4.6 billion years old, even though no Earth rocks have been formed that can be dated at more than 4 billion years old. This discrepancy is most likely caused by Earth’s original crust being:

A) Difficult to date precisely

B) Blasted away during Earth’s formation

C) Subject to extensive erosion

D) Destroyed by solar radiation

When the solar system formed, smaller bodies joined together through collision and the force of gravity to form larger bodies called ____.

A) Planettesimals

B) Moons

C) Protoplanets

D) Planets

Why do galaxies which are farthest away from the Milky Way provide information about what the universe may have been like when it was much younger?

A) Light which left these galaxies billions of years ago is only now reaching Earth.

B) These galaxies have not changed since their formation.

C) These galaxies are among the youngest in the universe.

D) The spectra of these galaxies have a blue shift, indicating they are moving towards Earth.

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