Mystery Science unit test

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. On Earth, it gives weight to physical objects and causes them to fall when dropped.

Front

How does gravity on Mars compare to Earth?

Back

Mars has about 38% of Earth's gravity, meaning you would weigh less and could jump higher.

Front

If you can jump 18 cm on Earth, how high can you jump on Mars?

Back

You can jump 36 cm on Mars because the gravity is less.

Front

What is a solar system?

Back

A solar system is a collection of planets, moons, asteroids, and other objects that orbit a star.

Front

What are moon phases?

Back

Moon phases are the different shapes of the moon as seen from Earth, caused by the moon's position relative to the Earth and the Sun.

Front

What is a waxing crescent moon?

Back

A waxing crescent moon is the phase of the moon when it is less than half illuminated and increasing in brightness.

Front

What is a waxing gibbous moon?

Back

A waxing gibbous moon is the phase of the moon when it is more than half illuminated and increasing in brightness.

Front

What is a sun dial?

Back

A sun dial is a device that tells the time by the position of the sun's shadow.

Front

What is the difference between a digital clock and an analog clock?

Back

A digital clock shows time in numbers, while an analog clock has hands that point to the hours and minutes.

Front

What is a full moon?

Back

A full moon is the phase when the entire face of the moon is illuminated by the sun.