Review

Which is true about birds and gravity?

• Birds avoid gravity by flying very quickly.

• Birds fly by using the force of their wings to overcome gravity.

• Birds fly by using heat to overcome gravity.

• Birds are too light in weight to be pulled by gravity.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-5

Jennifer and Marcos launch air rockets in their science class. Air pressure from a hand pump causes the rockets to rise into the sky. What force causes them to return toward the ground?

• wind pushing up

• pull of Earth's gravity

• heat from the sun

• magnetic north pole

Tags

NGSS.MS-PS2-4

Gabriela plays on a soccer team. Soccer is played with a ball that is round and is made up of black and white shapes. Gabriela can kick the soccer ball a long distance on the field. She practices every day. She is able to use one knee to hit the soccer ball up just a little bit, then hit it again with the other knee. Which of these can be explained as a result of the force of gravity?

• The soccer ball moves downward between knee hits.

• The soccer ball is round.

• The soccer ball rolls a long distance on the field.

• The soccer ball is black and white.

Tags

NGSS.MS-PS2-4

The diagram shows arrows representing forces acting on an airplane. Which arrow shows the force of gravity?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Chenoa is a third-grade student who has been studying the force of gravity in science class. Her teacher, Mrs. Park, has asked her to list examples of situations that demonstrate how gravity can be overcome. Which of the following does NOT belong on Chenoa’s list?

• an airplane flying through the air

• shooting a basketball towards the hoop

• a leaf falling to the ground

• a plastic bag being blown across the sky

Tags

NGSS.3-PS2-1

Some students are enjoying a fall carnival at their school. They notice some of the balloons near the carnival entrance have come loose and are rising higher and higher into the sky. The students start to discuss why the balloons are rising. Which of the students provides the best explanation for why the balloons rise into the sky?

• Angelina: Round objects, like balloons, are not pulled down by gravity.

• Victor: Energy from the sun pulls the balloons into space.

• Rabia: The force of gravity does not act on objects that are outside.

• Jose: There is an upward force on the balloons that is stronger than gravity.

Tags

NGSS.MS-PS2-4

What is the area of the rectangle?

• 48 sq feet

• 48 sq inches

• 28sq feet

• 28 feet

Friction produces heat when two objects are

• mixed together.

• rubbed together.

• burned

• attracted to magnets.

A metal roof gets very hot on a summer day.  What is the source of the heat energy?

• sun

• air

• clouds

• weather

Water is called a renewable resource because

• it can be cleaned and used again and will not run out.

• pollution does not affect water.

• more water is being made in clouds all the time.

• there is always plenty of water available.

Tags

NGSS.MS-ESS2-4