Gravity

What role does gravity play in the formation of celestial bodies?

• It has no effect

• It holds them together

• It pushes them apart

• It makes them spin

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Lola pulls an apple from the bottom of a pile. All the other apples fall to the ground. What force brought the apples down?

• gravity pulling on each apple

• gravity pulling on the first apple

• gravity pulling on the top apple

• gravity pulling on the ground

Tags

NGSS.MS-PS2-4

When a baseball player hits a fly ball high into the air, the fielder must wait for it to come down to catch it. If there were suddenly no gravity on Earth, how would a fly ball be different?

• It would not go as high

• It would stick to the bat

• It would never come down

• It would come down more slowly

Tags

NGSS.MS-PS2-4

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

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.

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.3-PS2-1

NGSS.3-PS2-2

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

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.

Sinan is flying a kite. A strong wind is blowing. This image shows the forces acting on the kite. Which arrow shows the force of gravity acting on the kite?

• Arrow A

• Arrow B

• Arrow C

• Arrow D

Tags

NGSS.MS-PS2-4

Look at the diagram of the roller coaster. The rollercoaster will be able to get over the top of the hill because.....

• Friction in the dip will speed it up.

• It gains enough energy going down the track to give it enough energy to get over the hill.

• There is no air resistance in the dip to slow it down.

• There is friction from the tracks.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1