7.8A, 7.8BC, & 7.9B 6th 9wks Assessment

Predict: Without the influence of gravity from the Sun and surrounding planets, how would Earth move through space?

TEKS 7.5G, 7.9B

• up and down

• 1. side to side    

  2.      

• 1. in a circle  

• 1. in a straight line

Tags

7.9B

7,5G

Apply: According to Table 1, which planet has the most elliptical orbit?

TEKS 7.9B

• 1. Planet A

• 1. Planet B

• Planet C

• 1. Planet D

Tags

7.9B

Infer: Scientists have discovered a new planet and are interested in determining how great its gravitational pull is on surrounding planets. What factors do they need to consider?

TEKS 7.9B

• 1. Velocity and mass

• 1. Mass and distance

• 1. Mass and volume

• 1. Density and distance

Tags

7.9B

The speed of a planet varies as it orbits the Sun. What causes the speed of a planet's orbit to change when it is closer to the Sun?

• Heat from the sun

• a reverse in the direction of the planet's orbit

• Gravity from the Sun

• an increase in the number of objects close to the Sun

Tags

7.9B

A comet is made up of different materials that hold together in space as the comet orbits. Which force holds a comet together and governs its motion?

• 1. gravitational force

• weak nuclear force

• strong nuclear force

• electromagnetic force

Tags

7.9B

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

• conduction

  
  

• convection

  
  

•  insulation

  
  

•  radiation

Tags

7.8A

What must happen in order for energy to transfer within a fluid by convection?

• The particles of one fluid must collide with those of another fluid.

• The particles of one fluid must move to another fluid.

• The energy must be carried upward by particles of the fluid.

• The energy must move out of the fluid to its surroundings.

Tags

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

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