Science LEAP Review Part 1

Mrs. Henderson's class has five small covered boxes.  One contains perfume; another contains dried onions.  There is also a box of pine needles, a box of lemon pieces, and a box with a paper towel wetted with vanilla flavoring.  Which should they do to get the best information about what is in each box?

• Shake the boxes.
• Smell the boxes.
• Listen to the boxes.
• Weigh the boxes.

Which of the following is an example of matter changing state?

• heating a pan of water until the water is all gone
• putting a soft-drink can in the refrigerator to cool it
• heating soup on the stove until it is hot to your tongue
• transferring sugar into a storage container

Which type of force requires contact between two objects for one to push or pull the other?

• frictional forces slowing down a rolling soccer ball
• the magnetic force pulling paper clips to a powerful electromagnet
• the magnetic force pushing two magnets apart
• the force of gravity acting on raindrops that fall to Earth

Jeannie put her soccer ball on the ground on the side of a hill.  What force acted on the soccer ball to make it roll down the hill?

• gravity
• electricity
• friction
• magnetism

On a field trip in a wooded area, you see a small, strange object.  You wonder whether it is a live animal.  The best way to find out is to observe the object to see if it

• has an odor.
• has separate parts.
• can make a noise and has a lifelike color.
• carries out basic life functions.

On a field trip in a wooded area, you see a small, strange object.  You wonder whether it is a live animal.  The best way to find out is to observe the object to see if it

• has an odor.
• has separate parts.
• can make a noise and has a lifelike color.
• carries out basic life functions.

A rock sample will most likely contain

• plants.
• minerals.
• water.
• wood.

Which object in the sky is a satellite of the planet Earth?

• Sun
• Moon
• Mars
• Saturn

Why do the Sun and Moon appear to move across the sky?

• The rotation of the solar system makes the Sun and Moon seem to move.
• The rotation of Earth makes the Sun and Moon seem to move.
• The Sun and Moon revolve around Earth.
• Earth revolves around the Sun and the Moon.

You are getting up to go to school in Louisiana; a student on the other side of Earth is getting ready for bed.  What is the reason for this?

• Earth revolves around the Sun.
• Earth rotates on its axis.
• The Sun rotates on its axis.
• The Moon revolves around Earth.