Midterm Review 1/3

Front

What is a hypothesis?

Back

A formal prediction that can be tested and may be accepted or rejected based on experimental evidence.

Tags

NGSS.MS-PS1-2

Front

What caused the Mars Climate Orbiter to crash?

Back

A navigation error due to a mix-up between English and metric units.

Front

What is the approximate size of the Milky Way galaxy?

Back

The Milky Way galaxy is approximately 100,000 light years across.

Tags

NGSS.MS-ESS1-3

Front

How old is the Universe?

Back

The Universe is approximately 13.7 billion years old.

Tags

NGSS.HS-ESS1-2

Front

What is the mass of the Moon compared to Earth?

Back

The Moon is about 1/80th the mass of the Earth.

Tags

NGSS.MS-PS2-4

Front

What is the nearest star to our solar system?

Back

Proxima Centauri, which is 4.2 light years away.

Front

What is an independent variable?

Back

The variable that is changed by the experimenter; it is the cause in an experiment.

Front

What is a dependent variable?

Back

The variable that is measured in an experiment; it is the effect that results from changes in the independent variable.

Tags

NGSS.MS-PS2-2

Front

What is a control variable?

Back

Variables that are kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

What is the significance of Proxima Centauri?

Back

It is the closest known star to the Sun, located 4.2 light years away.