Patterns of Earth and Sky, Earth Systems, Modeling Matter Review

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

What is the difference between a mixture and a compound?

Back

A mixture is made of two or more substances that are not chemically combined, while a compound is a substance formed when two or more elements are chemically bonded.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms and their physical environment interacting as a system.

Front

What causes day and night?

Back

Day and night are caused by the rotation of the Earth on its axis.

Front

Why can we see stars at night but not during the day?

Back

We can see stars at night because the sun's light is not overpowering the light from the stars.

Front

What is the sun?

Back

The sun is a star at the center of our solar system, providing light and heat to Earth.

Front

What is the role of the moon in relation to Earth?

Back

The moon orbits Earth and affects tides and night visibility.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of an object on its axis, while revolution is the movement of one object around another.

Front

What is a star?

Back

A star is a massive, luminous sphere of plasma held together by gravity.