4th Gr Unit 1 Science Test HAV

It is the tool used to accurately measure the volume of liquids.

• Graduated cylinder

• Triple beam balance

• thermometer

• funnel

You have a bowl filled with marble and a ping pong ball. What is the best way to see which one is denser than the other?

• Place a magnet next to the ping pong balls and marbles.

• Dump them in the water to see if one will sink or float.

• Place them on a triple beam balance.

• Count the number of marbles versus the number of ping pong balls.

Which of the following scenario should you tell the teacher during a lab investigation?

• When you get hurt.

• When you break something

• When your tool is not working

• All of the above.

What tool would you use to measure the amount of force exerted by an object?

• Graduated cylinder

• Triple beam balance

• Spring scale

• Hot plate

4th-grade students are playing with a rubber airplane. They want to know how the number of winds of the rubber band affects the airplane moves. What would they change in their investigation?

• Number of winds on the rubber band

• Number of airplanes

• The distance it travels

• The length of the airplane

Students are investigating with a toy car on a carpeted floor and the cemented floor and compared the distance the toy car traveled, what force are they trying to investigate?

• Gravity

• Friction

• Magnetism

• All of the above

Students are taking turns in dropping the parachutes that they made. Both students claim that their parachutes landed faster than the other. What can they do to investigate which one landed faster?

• Ask another friend to watch and see which one landed the fastest.

• Measure the width of the parachute.

• Change the length of the rope of the parachute.

• Ask one friend to time each parachute as they land on the ground and see which one has the shortest time.

How will you know which magnet is the strongest?

• Place the magnet in water and see if it floats.

• Use a ruler to measure the length of the magnet.

• Use a balance to measure the mass of the magnet.

• Count how many paper clips each type of magnet picks up.

Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on the right side. After 2 weeks, she observed which side of her head has more gray hair showing. What is the independent variable?

• left side of her head

• the types of hair dye

• the amount of time

• her grey hair

Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on the right side. After 2 weeks, she observed which side of her head has more gray hair showing. What is the dependent variable?

• how long the hair dye lasts

• the type of hair dye

• her grey hair

• the amount of time