PSSA Science Review March 5

What describes what soil is made of?

• Dead plants and animals

• Broken rocks

• Minerals

• All of these

Which of the following produce the light they give off?

• The sun

• The sun and other stars

• The sun and other stars and the moon

• The sun, other stars, the moon, and the planets

It is a clear, dark night. You have a good view of the sky. You see plenty of stars, but you cannot see the moon. What could explain this?

• Light from the stars makes it hard to see the moon.

• There is a star or planet blocking the moon.

• The side of the moon that's lit up is facing away from the Earth.

• Earth is blocking the sunlight that ordinarily reaches the moon.

Which action causes day to turn to night?

• The moon casts a shadow.

• The moon orbits the Earth

• Earth orbits the sun.

• Earth rotates on its axis.

How do you know where to find the sunset each night?

• Look to the right

• Look to the east

• Look to the west

• It depends where you are

Seasons change as __________________________

• Earth rotates on its axis

• Earth revolves around the sun

• Earth changes shape

• The moon revolves around the Earth.

Seasons change because _________________________

• Earth's orbit is not round.

• Earth's axis is tilted.

• Earth's orbit changes speed.

• Earth's revolution around its axis slows down.

You are hiking on a rocky trail. You start thinking about the history of those rocks. You know that rocks could once have been ____________________________.

• Soil in a field

• Melted rock under the Earth

• Lava in a volcano

• All of the above

Red-hot lava (melted rock) is pouring out of an erupting volcano. What provided the heat to melt the rock?

• The sun

• Another volcano

• The inside of the Earth

• A chemical reaction

Earth's water is found in many places. Where would you find the greatest quantity?

• In rivers and lakes

• In groundwater

• In air

• In the oceans