TEKS 9A

Luis and Marta built a solar oven. They cut the top of a box to function like a lid. They then lined the lid and the entire inside of the box with aluminum foil. They placed a piece of black construction paper at the bottom of the box, and after putting hotdogs on a plate inside so they could cook, they sealed the top with plastic wrap. Their solar oven is shown in the image. Which type of energy transfer is maximized by the aluminum foil?

• Conduction

• Convection

• Radiation

• Both Convection and Radiation

Tags

TEKS.SCI.7.8A

What force holds the planets in motion around the sun?

• magnetic

• electrical

• gravitational

• air resistance

Tags

TEKS.SCI.7.9B

Select the correct answer for each box.

This causes the wax of the candle to melt away from the flame. ​ ​ ​ (a)  

This causes the heat to be felt by someone sitting near the candle.​ (b)  

This causes the flame to get longer and cool air to move into the bottom of the flame.​ (c)  

• Radiation

• Convection

• insulation

• conduction

Tags

TEKS.SCI.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

TEKS.SCI.7.8C

TEKS.SCI.7.8B

Alayna wants to make a popsicle, so she freezes a cup of juice. If the juice has cooled from 20 degrees Celsius to 10 degrees Celsius, what has happened to the kinetic energy of the juice molecules?

• The average kinetic energy of the molecules has about doubled.

• The average kinetic energy of the molecules is about half what it was originally.

• The average kinetic energy of the molecules has increased by about 10 times.

• The average kinetic energy of the molecules has decreased by about 10 times.

Tags

TEKS.SCI.7.8B

A girl stirs soup with a metal spoon. Which process causes her hand to get warmer?

• conduction

  
  

• convection

  
  

•  insulation

  
  

•  radiation

Tags

TEKS.SCI.7.8A

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

TEKS.SCI.7.8A

Which of the following would have the greatest gravitational attraction between the two masses

• Picture A

• Picture B

• Picture C

Tags

TEKS.SCI.7.9B

Explain why a golf ball that is his on the moon travels much farther than a golf ball that is hit with the same force on Earth. 

• The moon has no no gravity

• There is a greater gravitational pull on earth pulling the ball down.

• There is a greater gravitational pull on the moon pulling on the ball

• The earth has no gravity

Tags

TEKS.SCI.7.9C

What allele combination should go in the missing box?

• AA

• Aa

• aa

• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2