day length and time zone

The continental US has ___ Time Zones. 

In your city, the Sun rises and sets once every ___ hours.

Colin is visiting his grandparents at the beach. While walking on the beach, he notices the tide pools that are left behind when the ocean recedes. Which of the following explains the cause of tides?

• Tides are caused by the force of attraction between the Earth's oceans and the Sun.

• Tides are caused by the expansion of ocean water due to warming by sunlight.

• Tides are caused by the gravitational interaction between Earth, the Sun, and the Moon.

• Tides are caused by the centrifugal force of Earth's rotation.

Which statement best describes ecosystems?

• They can never change once they are established.

• They constantly change in different ways over time.

• Ecosystems always revert back to their original state.

• Each ecosystem can exist for only a specific length of time.

Which of the following planets most likely has the warmest surface temperature? 

• Earth

• Jupiter

• Neptune

• Mercury

If it is 1:00 am in Phoenix, what time is it in Alaska?

• 11:00 pm

• 11:00 am

• 3:00 am

• 3:00 pm

The sun appears to move across the sky because

• It is rising and falling
• The sun revolves around the Earth
• The Earth revolves around the sun
• The Earth rotates on its axis

All of the following statements regarding galaxies are true except. 

• Irregular galaxies contain both new and old stars.

• Irregular galaxies are the result of two galaxies colliding. 

• Elliptical galaxies are constantly creating new stars

• Spiral galaxies contain both old and new stars

What season is this?

• Winter
• Summer
• Spring
• Fall

3) The lines on which set of views best represent Earth's latitude system?

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