7.9b

Which of these is an example of energy transfer by radiation?

• A piece of warm toast makes the plate it is sitting on feel warm.

•  Your body feels warm when you stand near a hot stove.

•  Ice placed in a cup of warm tea slowly melts.

•  Hot air above a campfire rises.

Tags

7.8A

Which is an example of conduction? Choose all that apply.

•  placing leftovers into the refrigerator

•  cool water sinking down through the ocean

• using a thermos to keep a drink cold

•  placing ice into a glass of water to chill it

  
  

Tags

7.8A

Which statement about radiation is correct?

• In solids, radiation transfers electromagnetic energy, but not thermal energy.

  
  

•  Cooler objects radiate the same amount of thermal energy as warmer objects.

• Radiation occurs in fluids such as gas and water, but not solids such as metals.

•  Radiation transfers thermal energy from the Sun to Earth.

  
  

Tags

7.8A

Infer: Why do hot air balloons rise?

• conduction

• convection

• thermal equilibrium

• radiation

Tags

7.8A

When a substance is cooled, what happens to the particles of the substance?

• kinetic energy increases

• 
  kinetic energy decreases

• 
  potential energy increases

• 
  potential energy decreases

Tags

7.8BC

7.8C

The total amount of thermal energy in an object depends on its temperature and its ___________.

• composition

• specific heat

• mass

• volume

Tags

7.8B

7.8C

What are the three main parts of a space shuttle as shown in the diagram?

• Payload bay, crew cabin, engines

• Wings, tail, cockpit

• Solar panels, laboratory, sleeping quarters

• Fuel tanks, control room, observation deck

What is one of the main reasons astronauts need to be protected from the conditions of space?

• Space has a lot of air and pressure

• Space is filled with breathable oxygen

• Space has extreme temperatures and no air

• Space provides natural sunlight for warmth

Why don't astronauts fall back to Earth when they are in orbit?

• Because the Earth's gravity does not reach space

• Because their inertia keeps them moving forward

• Because they are constantly jumping

• Because they are magnetically repelled by the Earth

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Describe the function of the payload bay in a space shuttle.

• It is where the crew sleeps during missions

• It is used to store food and water for long missions

• It may carry a satellite to be released into orbit or used for experiments

• It is the control center where astronauts manage the shuttle's course