SCI Mod 4 Review

During Experiment 1, a student pushes car X much closer to the center of the seesaw. Which statements best predict what will happen to the forces and motion as soon as car X starts to move? Select the two correct answers.

• The seesaw will begin to tilt.

• The seesaw will stop moving and be flat.

• The forces on the seesaw will become balanced.

• The forces on the seesaw will become unbalanced.

• The seesaw will move up and down in a repeated pattern.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Use the information and your knowledge of science to answer the questions. A grabber tool can be used to pick up an object that would otherwise be too hard to reach. A grabber tool is shown in the figure. Part A: Yasmin has a desk that is difficult to move. The desk is in a corner of her bedroom. She often loses small steel tacks and paper clips behind the desk. The current design of the grabber tool does not allow for it to pick up the steel tacks and paper clips. Which statement best describes the problem with the design of the grabber tool that Yasmin needs to solve?

• The grabber tool cannot grab and move a heavy desk.

• The grabber tool cannot pick up very small objects.

• The grabber tool cannot pick up objects without breaking them.

• The grabber tool cannot grab and move objects of different sizes.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Which change to the grabber tool would best help Yasmin solve the design problem of the grabber that cannot pick up small paper clips?

• making the handle of the tool longer

• making the grabbing area on the end of the tool larger

• adding magnets to the grabbing area on the end of the tool

• adding soft padding to the grabbing area on the end of the tool

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

Use the information and your knowledge of science to answer the question. Beth and her younger sister Jenny are on a swing set. Jenny's swing has a shorter chain and is higher off the ground than Beth's swing. Their cousin Lisa watches them swing. Lisa makes these observations: - Beth moves forward and backward three times in six seconds. - Jenny moves forward and backward four times in six seconds. - Beth and Jenny are in the same place and going in the same direction at three seconds and at six seconds. Lisa correctly predicts how Beth and Jenny will be moving at twelve seconds. Why is Lisa able to predict how her cousins will be moving in the future?

• Lisa observes that one swing is shorter than the other.

• Lisa observes that Beth moves farther than Jenny does.

• Lisa observes that the motion of each swing happens in a pattern.

• Lisa observes that Beth moves back and forth more times than Jenny does.

Two balloons are charged with static electricity. What will most likely happen to the balloons if they are held near each other?

• The balloons will stay in the same place.

• Their charges will change and the balloons will deflate.

• The opposite charges will cause the balloons to pull toward each other.

• The same charges will cause the balloons to push apart from each other.

Tags

NGSS.MS-PS2-3

Kacie scored a goal by kicking the soccer ball during a soccer game. Which statement best explains how Kacie kicking the ball is evidence of a force?

• Kacie kicking the ball is evidence of a force, because the ball moved from one place to another.

• Kacie kicking the ball is evidence of a force, because the ball is black and white.

• Kacie kicking the ball is evidence of a force, because the ball stays still while in the air.

• Kacie kicking the ball is evidence of a force, because Kacie scored a goal.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What evidence can tell you if a force is acting on an object?

• The object is very heavy.

• The object changes colors.

• The object stays in the same place.

• The object starts or stops moving.

Tags

NGSS.MS-PS2-2

Sometimes forces on an object makes it move or fall. Below is a picture of ______ forces.

• magnetic

• balanced

• non-touching

• unbalanced

Tags

NGSS.3-PS2-1

A force is a type of interaction. It can change the motion of an object. There are always forces acting on all objects. Below is a picture of ____ forces.

• magnetic

• balanced

• non-touching

• unbalanced

Tags

NGSS.3-PS2-1

A student conducted an experiment to see how far one nail would move using two different magnets, Magnet A and Magnet B. Her results are shown in the data table below. Distance the nail was pulled (cm) Magnet A: 12.7 Magnet B: 9.3 Which of the following statements best explains the results from the experiment?

• The magnets have the same strength.

• Magnet A is stronger than Magnet B.

• Magnet B is stronger than Magnet A.

• The magnets are the same size.

Tags

NGSS.3-PS2-1

NGSS.3-PS2-3