Assessment on Energy

What is energy defined as in physics?

• The ability to do work or cause change
• The speed of an object in motion
• The mass of an object
• The temperature of a substance

When measuring and recording mass in science which SI units should you use?

• Meter
• Liter
• Gram
• Celcius

During the course of a day you exhale 600 liters of carbon dioxide, how many decaliters does this represent?

• 600000 daL
• 6 daL
• 6000 daL
• 60 daL

Based on the graph below, what is population of this area in the year 2000?

• 400 people
• 0 people
• 670 people
• 300 people

If your cat has a mass of 3.6 kg how many milligrams does this represent?

• 0.00036 mg
• 36 mg
• 360 mg
• 3600000 mg

(True or false) Scientists around the world use the SI unit second for time.

• False
• True

The slope of the line below represents which kind of relationship:

• Positive relationship
• Negative relationship
• Zero relationship
• Toxic relationship

Which number in standard notation represents 4.1 x (10^3)?

• 41000
• .0041
• 4100
• 4.1

What is the main difference between a scientific theory and a scientific law?

• Laws are more important than theories
• Theories describe what happens, while Laws explain why
• Laws describe what happens, while theories explain why
• Theories are always proven true

A student wants to test if the diameter of her straw in the balloon car affects the speed. She builds 5 identical cars but changes the diameter of the straw on each one. She then tests and calculates the speed of each one. In this experiment which of the following is the dependent (responding) variable?

• The shape of the balloon
• The distance they travel
• The speed of the car
• The diameter of the straws