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Metals are good conductors of electricity because

• they contain free electrons
• the atoms are lightly packed 
• they have high melting point
• all of the above

Stars appears to move from east to west because

• All stars move from east to west
• The earth rotates from west to east
• The earth rotates from east to west
• The background of the stars moves from west to east

Light year is a unit of

• Time
• Distance
• Light
• Intensity of light

The absorption of ink by blotting paper involves 

• Viscosity of ink
• Capillary action phenomenon
• Diffusion of ink through the blotting
• Siphon action

The mass of 100 paper clips is measured at 52.3 grams. The mass of a single paper clip from this group would be closest to

• 523 g

• 5.23 g

• 0.523 g

• 0.0523 g

What is the approximate mass of a high school student?

• 1 kg

• 5 kg

• 60 kg

• 250 kg

The mass of a physic s textbook is closest to

Defintion of Energy Transfer

• Energy Moving Between 3 objects

• Energy Moving Between Two Objects Or systems

• Energy Moving Between One object or systems

• Energy Moving between systems

Defintion of energy

• To be able to do something

• The ability to change speed

• The abilty to change dircetion

• The ability to do work

What is the difference between force pairs and balanced forces?

• Force pairs act on diffrent objects and balanced forces act on the same object

• force pairs act on the same object and unbalanced force act on different objects