Space and Earth Structures

How long does it take for the Earth to orbit the Sun once?

• 24 hours
• 365 days
• 28 days
• 12 hours

Why can we see the Moon?

• The Sun's heat makes the Moon light up.

• The Sun's light reflects off the Moon's surface

• The Moon has its own light.
• The other stars make the Moon light up.

Why does the Sun appear to move across the sky?

• because of Earth's revolution

• because of Earth's gravity

• because of the Sun's gravity
• because of Earth's rotation

How does the Moon move?

• revolves around Sun

• rotates around Earth
• revolves around the Earth

• rotates around the Sun

What happens because of Earth's revolution and the tilt of the Earth?

• Earth's rotation

• day and night
• seasons

• Moon phases

Minerals are identified and sorted by different physical properties.  Luster is one physical property used to sort minerals into different types. 

 

Which of the of following statements describes a mineral’s luster?

• The mineral’s surface reflects the light.

• The mineral’s sides are smooth.

• The mineral’s streak is clear.

• The mineral’s color is gray.

About how long does it take for Earth to rotate once?

• 12 hours

• 365 days
• 28 days
• 24 hours

Eric uses a hand lens to look closely at the surface of a piece of granite.  He notices large crystals in the rock that glitter in the sunlight.  What is Eric most likely seeing?

• minerals

• sediment

• fossil pieces

• metal pieces

Mara and Ivy are asked to identify two minerals in science class.  To do this, they decide to study the physical properties of the minerals in the following ways.

1.       Examine how they freeze.

2.       Determine how they break.

3.       Rub them on a white tile plate. What is the best method (or methods) for the girls to study the physical properties and identify the two minerals?

• a.       1 only

• b.       2 only

• c.       1 and 2

• d.       2 and 3

After rubbing quartz and calcite together, Raquel observes that the quartz scratches the calcite. Which physical characteristic is Raquel most likely trying to investigate by scratching these two minerals together?

• cleavage

• hardness

• luster

• streak