_________________ is the bending of a light wave as it moves from one substance to another.

True or False: Light slows down when it enters a flat lens and speeds up when it exits.

Opaque objects allow _________ light through

A prism separates white light into a ______________.

Which is the correct order from smallest to largest?

How are radio telescopes different from optical telescopes?

What advantage does a space telescope have compared to an optical telescope?

Why can't we see stars during the day?

Are all stars the same distance from Earth?

The ____ is the closest star to Earth.

As Earth spins, the part facing the sun experiences ____________.

The spinning of Earth on its axis is called __________.

A ________________ changes the direction, distance, or strength of one force.

A(n) ___________ is a simple machine made up of one or two inclined planes that forces objects apart.

A type of simple machine made of an inclined plane wrapped around a cylinder that holds objects together is known as a(n) _________.

Simple machines make it possible to use less __________ to move an object.

The force caused by one object rubbing against another is called __________.

Scientists who study weather patterns are called _________.

When water ________________ it turns to water vapor.

Ice is an example of water in its _____________ state.

_________________ changes liquid water to a solid.

What are the 3 main forms of clouds we learned about this week? (click all correct answers)

These are the low, gray clouds that sometimes sit near the ground as fog:

When a cloud becomes _______ it means that it has precipitation falling from it.

All of the living things in an ecosystem are the _________ factors.

An example of mutualism we learned about is:

Organisms that eat producers are called ___________.

The hawk in this picture is an example of a(n) ___________

A sound wave that bounces back to you is ______________. 

______________________ is how loud or soft a sound is perceived. 

An echo is a sound wave that is _______________ . 

Vibration is _________________________________. 

The system scientists use to locate objects underwater using sound is called _____________. 

What are the 3 main factors that determine how bright a star appears to us?

The amount of energy a star puts off is called its ______________________.

When a star produces too much energy and explodes it is called a ________________.

All of these are examples of star size classifications EXCEPT:

True or False: The sun is the hottest star at 35,000 degrees Celsius.

When a star produces too much energy and explodes it is called a ________________.

What do you call the changes in the moon's appearance throughout a 4 week cycle?

About how many days does it take for the moon to orbit Earth?

When the moon is between Earth and the Sun it appears dark in the night sky. This is called _______.

After the first quarter the moon appears to grow rounder and seems almost full. This is known as _______.

After the waning gibbous phase, the moon appears half lit in the night sky. This phase is called _______________.

Which word means "growing larger/fuller in appearance"?

Which word means "growing less full/smaller in appearance"?

The average temperature and rainfall in a region over time is called __________.

_________________ means distance from the equator.

The movement of ocean water around the world is called ____________.

Air temperature gets ____________ as you go higher in the atmosphere.

True or False: The United States has only one climate zone.

__________________ is what the air is like outside at a certain time and place.

Which of the following are examples of weather?

A __________ measures air temperature.

A _________ shows which direction the wind is blowing.

A ______________ measures wind speed.

A simple machine made up of one or two inclined planes that is used to force objects apart.

A simple machine made of an inclined plane wrapped around a cylinder and used to hold objects together.

Lily jogged to school on Monday. It took her 10 minutes. On Tuesday she jogged to school the same way but it took 15 minutes. What changed?

The four outer planets are made mostly of ___________.

______________ is the largest planet in our solar system.

Uranus is known for its ____________.

True or False: The Kuiper Belt and Oort Cloud contain small, icy bodies that may remain from when the solar system formed.

_____________ is the farthest planet from the sun.

Choose the four inner planets from the list below:

_______________ is the hottest planet.

True or False: There are inactive volcanoes on Mars.