Science test 2013

Which statement below describes how energy can be helpful?

• Lightning strikes a building.
• A fire burns down a house.
• Electricity heats an oven.
• The wind blows down a sign.

There is a shadow under a tree. Which form of energy must be present for the shadow to occur?

• heat
• light
• sound
• mechanical

Matter is defined as anything that takes up space and has

• mass
• texture
• ordor
• color

The diagram shows a person using a tool to lift a box.  Which tool is being used?

• inclined plane
• lever
• magnet
• pulley

The changes to the land shown in the diagram were most likely caused by

• erosion and deposition
• erosion and magnetism
• gravity and evaporation
• gravity and condensation

The hardness, odor, and taste of an object can all be

• measured with a ruler
• measured with a spring scale
• observed with the senses
• observed with a hand lens

Two empty metal cans, one black and one white, were placed outside on a hot day. Both cans were the same size and were left in the Sun for 3 hours.  Compared to the white can, the black can would most likely be

• cooler, because it absorbs less sunlight
• cooler, because it absorbs more sunlight
• warmer, because it absorbs less sunlight
• warmer, because it absorbs more sunlight

What force is represented by the arrow?

• magnetism
• gravity
• electricity
• friction

The appearance of the Moon as observed from Earth changes over time because of the Moon's

• path around Earth
• length of daylight
• gravity
• temperature

The diagram shows the Earth rotating.  What is the total number of complete rotations that Earth makes in 2 weeks?

• 1
• 2
• 7
• 14