Adv Phys Sci-Section 2 Exam Review- MACHINES & ENERGY

A car that is rated at 50 horse-power means that it can do the same amount of work as 50 horses

• TRUE
• FALSE

The law that says: "Energy can never be created or destroyed" is called

• Conservation of Power
• Energy Distribution
• Conservation of Energy

Tags

NGSS.MS-PS3-5

Which of the following is true regarding grams?

• Grams are not used in the metric system.
• One gram = 0.035 oz
• Grams are used to define the volume of an object.

Unlike gears and pulleys, levers cannot give us a mechanical advantage.

• TRUE
• FALSE

Which of the following shows how we determine work?

• work = force x distance
• work = force x weight
• work = force squared

Kinetic energy is the energy of motion.

• TRUE
• FALSE

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A compound machine is simply two or more simple machines combined.

• TRUE
• FALSE

Lifting a 5 pound weight 5 feet in 3 seconds produces more work than lifting a 5 pound weight 5 feet in 1 minute.

• TRUE
• FALSE

An orbit is a non-repeating path in space that one planet takes around another.

• TRUE
• FALSE

Tags

NGSS.MS-ESS1-2

Which best describes what specific gravity is?

• Specific gravity is the density of a substance compared to 1 gram of sea water.
• Specific gravity is the density of a substance compared to water.
• Specific gravity is the weight of an object compared to water.