Science Review #4

If 25 grams of sugar dissolves into 150 grams of water, what is the new weight of the liquid?

• 125 g
• 150 g
• 25 g
• 175 g

Why does the weight of the dry ice go down while it's sitting on the scale?

• it's melting
• it's disappearing
• turning into a gas
• none of these

An oreo cookie has a mass of 20 grams. It gets crushed into crumbs for a recipe. What is the mass of the crumbs?

• 15 grams

• 25 grams

• 20 grams

At what temperature is water a gas?

• below 0° C

• above 100° C

• between 0° C and 100° C

• between 0° C and 120° C

The sun is the center of the solar system. Which objects in the solar system do not revolve around the sun?

• asteroids

• comets

• moons

• dwarf planets

Which two factors affect the gravitational force between two objects?

• force and size

• size and distance

• mass and distance

• mass and force

A litter of rabbits is born in an area with a lot of snow year-round. Two babies are white and two are brown. What is true about this variation?

• The variation will help the brown rabbits survive.

• The variation will help all the rabbits survive.

• The variation will help none of the rabbits survive.

• The variation will help the white rabbits survive.

Which of the following is an example of a living thing's environment affecting its physical characteristics?

• a puppy born with brown fur

• a flower in the shade not growing very tall

• a bird's ability to fly

• a baby crying when hungry

What can the presence of fossils tell us?

• Oceans once covered what is now dry land.

• Forests once covered what are now deserts.

• Glaciers once covered much of North America.

• All of the answers are correct.

• The objects move in opposite directions, and both objects move at the same speed.

• The objects move in the same direction, and both objects move at the same speed.

• The objects move in the same direction, and Object 1 moves half as fast as Object 2.

• The objects move in the same direction, and Object 1 moves twice as fast as Object 2.