Science Review

If you wanted to test the effect of gravity on an object, which set of materials should you choose?

• battery, wires, lightbulbs
• hot plate, water, thermometer
• two different types of balls, metric ruler
• two cups, two different types of soil, water and seeds

The Smiths notice a bird flying into a window.  The bird flies into the window because light - 

• travels through the window
• reflects from the window
• refracts around the window
• reflects around the window

Which statement describes weather, rather than climate?

• The weather is usually hot and humid year around
• The destination has hot summers and cold winters
• The summer temperatures average between 29 and 35 degrees
• The humidity level on Tuesday was 30%

A class learns about fossil fuels.  They learn that coal, oil and natural gas are classified as nonrenewable resources because they take so long to form.  How can the class conserve fossil fuels?

• Use both sides of notebook paper
• Arrange a car pool to and from school
• Create a backyard compost pile
• Plant flowers in front of the school

Students conduct an investigation to observe the Sun's movement.   Which safety procedure should students following during this investigation?

• Wear gloves and goggles
• Keep loose hair tied back
• Never look directly at the Sun
• Record all data in science notebooks

Students conduct and investigation to determine which substances are soluble in water.  All of the following have the property of solubility in water EXCEPT - 

• sugar cubes
• salt crystals
• cooking oil
• food coloring

Which testable question could be used to investigate the effects of force on an object?

• Why do toy cars move?
• Which type of battery lasts the longest?
• Where can magnets be purchased?
• Do balls roll faster on rough or smooth surfaces?

A bear receives the energy it needs to survive after it -

• drinks plenty of water
• eats fish and berries
• takes a nap
• rests in the sunlight

All of the following are poor insulators of electricity EXCEPT -

• penny
• nail
• eraser
• paperclip

Which mixture can be separated using a coffee filter?

• rocks and sand
• sand and water
• lemon juice and water
• sand and iron filings