1st Grade Science : Light and Visibility

Study concepts, example questions & explanations for 1st Grade Science

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Example Questions

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Example Question #1 : Plan An Investigation Placing Objects In A Beam Of Light

Janine is planning an investigation about placing objects in light. She has to use something that makes a beam of light.

Where does light come from?

Possible Answers:

Only natural sources

Only human-made sources

Natural and human-made sources

It is unknown where light comes from

Correct answer:

Natural and human-made sources

Explanation:

Light can come from natural and human-made sources. An example of a natural light source is the Sun; an example of a human-made light source would be a lightbulb. Either one can produce light.

Example Question #2 : Light And Visibility

Annie asks the scientific question: How can I block light? She has been thinking of how she can test this.

Which plan sounds most reasonable for investigating her question?

Possible Answers:

Annie can take different objects and place them in front of a beam of light. She can observe which types of objects block light and which allow it to pass.

Annie can stand in front of a flashlight. This would block the light and her question is answered without needed to test anything else.

Annie can first rent an expensive laser and science lab. Then point the laser at different objects to see what happens.

Correct answer:

Annie can take different objects and place them in front of a beam of light. She can observe which types of objects block light and which allow it to pass.

Explanation:

Annie is asking a valid scientific question, and it can best be answered with an investigation. For an investigation to be reasonable, it has to be something Annie could perform and would answer the question. Annie's plan to place objects in front of the beam of light would help her to see how light can be blocked and what type of items would be best for blocking light.

Example Question #3 : Light And Visibility

Which question would NOT be able to be investigated because it is based on personal opinion?

Possible Answers:

What happens to an object when placed in a beam of light?

How can I block light?

Why do you want to block light in your everyday life?

Correct answer:

Why do you want to block light in your everyday life?

Explanation:

An investigation can be completed for a scientific question where data can be collected from measuring or observing what takes place. "Why do you want to block light in your everyday life?" leads to personal opinion rather than data because it is asking "why you" want to do something. Each person's opinion may be different.

Example Question #4 : Light And Visibility

Melissa wants to plan an investigation and her scientific question is: Which materials will block the light best to help us make our room as dark as possible?

Which list of supplies would be most appropriate for this investigation?

Possible Answers:

A lamp, white construction paper, yellow sticky notes, and green tape

A candle, your hands, a stuffed animal, and a pencil

A flashlight, notebook paper, blue construction paper, and black fabric

Correct answer:

A flashlight, notebook paper, blue construction paper, and black fabric

Explanation:

The list of supplies that would be most appropriate is a flashlight, notebook paper, blue construction paper, and black fabric. Each of those items can be placed in front of the flashlight to determine which blocks the most or least light and if it makes the room dark.

Example Question #5 : Light And Visibility

"What do we see when we look into a place where all the outside light is blocked from getting in versus the light is not blocked?"

How could Maggie plan an investigation to test this scientific question?

Possible Answers:

Look in a room where the light is blocked and one where light is shining in and record what she sees.

Remember in the past where she looked into different rooms and record what she thinks happened.

Put different types of lightbulbs in a lamp and test which one brightens the room the most.

Correct answer:

Look in a room where the light is blocked and one where light is shining in and record what she sees.

Explanation:

This scientific question is comparing a room with two different amounts of light. One room would need windows to be blocked from light getting in, and Maggie would look and record what she can see. Another room would have light flowing in through a window, and again Maggie would log what she sees. Maggie has to have an investigation that would allow her to compare the two different amounts of light in the room.

Example Question #6 : Light And Visibility

Which object would be best to use in an investigation about blocking light?

Possible Answers:

A glass cup

Plastic wrap

A dark sweater

Correct answer:

A dark sweater

Explanation:

A dark sweater would be the best object to use in an investigation about blocking light because it is made of a material and is a color that absorbs or blocks light. A glass cup and plastic wrap are clear, so the light will pass through, whereas a dark sweater will prevent the light from passing.

Example Question #7 : Light And Visibility

What object would be the best for investigating light reflection? (Remember reflection means to throw back or send back)

Possible Answers:

Paper

Clothing

Mirror

Correct answer:

Mirror

Explanation:

The object that would be most appropriate for investigating light reflection would be a mirror. Mirrors reflect images and light, whereas paper and clothing absorb light. Using a mirror would allow someone to shine a light on the mirror and record how it reflects and study why.

Example Question #8 : Light And Visibility

Which object would be best for investigating light passing through materials?

Possible Answers:

A sweater

Plastic wrap

A mirror

Correct answer:

Plastic wrap

Explanation:

The best object for investigating light passing through a material would be the plastic wrap. All of the other answer choices would either reflect or block light from passing so they would not help with this investigation. Plastic wrap is clear and would allow the light to pass through.

Example Question #9 : Light And Visibility

Matt places different objects in front of a flashlight to make silly shadows. He starts to wonder more about shadows and what else makes them.

Which answer choice is the best plan for investigating what makes shadows?

Possible Answers:

Matt can look around outside and inside for shadows. When he finds one he can record what he sees and what is making the shadow.

Matt can take a flashlight and shine it around really fast to see all the shadows it creates. He can write down when he gets tired of moving the flashlight.

Matt has already tested this with the flashlight, so there is nothing else for him to investigate.

Correct answer:

Matt can look around outside and inside for shadows. When he finds one he can record what he sees and what is making the shadow.

Explanation:

If Matt is wondering what makes shadows beside the flashlight, he needs to explore other light sources. Looking around inside and outside will give Matt other light sources and views of shadows. Keeping recordings of the investigation will provide Matt the data and evidence he needs to make a conclusion.

Example Question #2 : Plan An Investigation Placing Objects In A Beam Of Light

Preston wants to investigate where people block light and why.

Which plan for an investigation would best help him answer these questions?

Possible Answers:

Preston could look around the house for blocked light and make a guess why it was blocked.

Preston could research blocking light on the computer. He could also go on a walk with his family to take notes about where he sees the light blocked.

Preston could just ask his parents the answer to save time from investigating himself.

Correct answer:

Preston could research blocking light on the computer. He could also go on a walk with his family to take notes about where he sees the light blocked.

Explanation:

The best plan for an investigation into how and why people block like would be to research online and then view with his eyes examples of light being blocked. He could record what he sees on the walk, in his own house, and the reasons online that he finds to answer his questions.

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